Revert "Reland "[fuchsia] Remove use of ambient VMEX capabilities""

This reverts commit c11a4d7497.

Reason for revert: Breaks web-based tests on core.x64-release-chromium_latest (e.g. text-input-test), due to tests not offering
VmexResource in the service-directory of the test web contexts.

Original change's description:
> Reland "[fuchsia] Remove use of ambient VMEX capabilities"
>
> This is a reland of commit 32d1466c6d,
> after addressing security policy & routing issues up-stream.
>
> - Remove job_policy_ambient_mark_vmo_exec from all component
>   manifests.
> - Remove most usage of the ambient-VMEX-capable ELF test runner.
>
> Some use of the ambient-VMEX ELF runner remains, to support tests
> which run SwiftShader in-process, which requires ambient-VMEX for its
> shader JIT.
>
> The test CML fragment for the VMEX-capable ELF test runner is also
> still required by out-of-tree dependencies, notably ANGLE.
>
> Bug: 1290907, 1185811, 1022542
> Cq-Include-Trybots: luci.chrome.try:fuchsia-smoke-astro,fuchsia-smoke-sherlock
> Change-Id: I3c8265ed3ed4bd3b2bdca154c7bd81f0a5ef31c7
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4589192
> Commit-Queue: Wez <wez@chromium.org>
> Owners-Override: Wez <wez@chromium.org>
> Reviewed-by: David Dorwin <ddorwin@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#1159323}

Bug: 1290907, 1185811, 1022542
Change-Id: I0a8d2bac20430de8f18243559a552221c1c8814e
Cq-Include-Trybots: luci.chrome.try:fuchsia-smoke-astro,fuchsia-smoke-sherlock
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4622610
Quick-Run: Wez <wez@chromium.org>
Owners-Override: Wez <wez@chromium.org>
Auto-Submit: Wez <wez@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Wez <wez@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1159417}

cc/BUILD.gn

@@ -932,15 +932,12 @@ cc_test("cc_unittests") {
   }
 
   if (is_fuchsia) {
-    # TODO(https://crbug.com/1022542): Some of these tests use SwiftShader,
+    # TODO(https://crbug.com/1185811): Investigate removing the requirement for
-    # which requires ambient VMEX.
+    # job_policy_ambient_mark_vmo_exec for the sake of V8's allocator in tests.
     test_runner_shard = "//build/config/fuchsia/test/elf_test_ambient_exec_runner.shard.test-cml"
 
     additional_manifest_fragments = [
       "//build/config/fuchsia/test/fonts.shard.test-cml",
-
-      # TODO(https://crbug.com/1185811): Investigate removing the requirement
-      # for VmexResource.
       "//build/config/fuchsia/test/mark_vmo_executable.shard.test-cml",
       "//third_party/fuchsia-sdk/sdk/pkg/vulkan/client.shard.cml",
     ]

chrome/app/chrome.cml

@@ -19,6 +19,9 @@
         // now.
         forward_stdout_to: "log",
         forward_stderr_to: "log",
+
+        // Required to allow JIT in child processes such as renderers.
+        job_policy_ambient_mark_vmo_exec: "true",
     },
     capabilities: [
         {

chrome/test/BUILD.gn

@@ -4887,6 +4887,7 @@ if (!is_android) {
     if (is_fuchsia) {
       use_test_server = true
 
+      test_runner_shard = "//build/config/fuchsia/test/elf_test_ambient_exec_runner.shard.test-cml"
       excluded_paths = fuchsia_package_exclusions
       additional_manifest_fragments = [
         "//build/config/fuchsia/test/audio_output.shard.test-cml",
@@ -9404,11 +9405,11 @@ test("unit_tests") {
 
     data += [ "//testing/buildbot/filters/fuchsia.unit_tests.filter" ]
 
+    # TODO(https://crbug.com/1185811): Investigate removing the requirement for
+    # job_policy_ambient_mark_vmo_exec for the sake of V8's allocator in tests.
+    test_runner_shard = "//build/config/fuchsia/test/elf_test_ambient_exec_runner.shard.test-cml"
     additional_manifest_fragments = [
       "//build/config/fuchsia/test/fonts.shard.test-cml",
-
-      # TODO(https://crbug.com/1185811): Investigate removing the requirement
-      # for VmexResource.
       "//build/config/fuchsia/test/mark_vmo_executable.shard.test-cml",
       "//build/config/fuchsia/test/network.shard.test-cml",
       "//third_party/fuchsia-sdk/sdk/pkg/vulkan/client.shard.cml",
@@ -10933,6 +10934,7 @@ if (!is_android) {
     if (is_fuchsia) {
       use_test_server = true
 
+      test_runner_shard = "//build/config/fuchsia/test/elf_test_ambient_exec_runner.shard.test-cml"
       additional_manifest_fragments = [
         "//build/config/fuchsia/test/fonts.shard.test-cml",
         "//build/config/fuchsia/test/network.shard.test-cml",
@@ -11001,6 +11003,7 @@ if (!is_android) {
     if (is_fuchsia) {
       use_test_server = true
 
+      test_runner_shard = "//build/config/fuchsia/test/elf_test_ambient_exec_runner.shard.test-cml"
       additional_manifest_fragments = [
         "//build/config/fuchsia/test/network.shard.test-cml",
         "//build/config/fuchsia/test/present_view.shard.test-cml",

components/BUILD.gn

@@ -106,11 +106,12 @@ test("components_unittests") {
   }
 
   if (is_fuchsia) {
+    # TODO(https://crbug.com/1185811): Investigate removing the requirement for
+    # job_policy_ambient_mark_vmo_exec for the sake of V8's allocator in tests.
+    test_runner_shard = "//build/config/fuchsia/test/elf_test_ambient_exec_runner.shard.test-cml"
+
     additional_manifest_fragments = [
       "//build/config/fuchsia/test/fonts.shard.test-cml",
-
-      # TODO(https://crbug.com/1185811): Investigate removing the requirement
-      # for VmexResource.
       "//build/config/fuchsia/test/mark_vmo_executable.shard.test-cml",
       "//build/config/fuchsia/test/network.shard.test-cml",
       "//build/config/fuchsia/test/present_view.shard.test-cml",
@@ -1024,6 +1025,7 @@ if (use_blink) {
     }
 
     if (is_fuchsia) {
+      test_runner_shard = "//build/config/fuchsia/test/elf_test_ambient_exec_runner.shard.test-cml"
       additional_manifest_fragments = [
         "//build/config/fuchsia/test/present_view.shard.test-cml",
         "//build/config/fuchsia/test/fonts.shard.test-cml",

components/viz/BUILD.gn

@@ -41,8 +41,8 @@ viz_test("viz_unittests") {
   }
 
   if (is_fuchsia) {
-    # TODO(https://crbug.com/1022542): Some of these tests use SwiftShader,
+    # TODO(https://crbug.com/1185811): Investigate removing the requirement for
-    # which requires ambient VMEX.
+    # job_policy_ambient_mark_vmo_exec for the sake of V8's allocator in tests.
     test_runner_shard = "//build/config/fuchsia/test/elf_test_ambient_exec_runner.shard.test-cml"
 
     additional_manifest_fragments = [

content/shell/fuchsia/content_shell.cml

@@ -5,7 +5,7 @@
   include: [
     "syslog/client.shard.cml",
     "vulkan/client.shard.cml",
-    "//build/config/fuchsia/test/elf_test_runner.shard.test-cml",
+    "//build/config/fuchsia/test/elf_test_ambient_exec_runner.shard.test-cml",
     "//build/config/fuchsia/test/chromium_test_facet.shard.test-cml",
     "//build/config/fuchsia/test/test_fonts.shard.test-cml",
   ],

content/test/BUILD.gn

@@ -2171,6 +2171,7 @@ test("content_browsertests") {
   if (is_fuchsia) {
     use_test_server = true
 
+    test_runner_shard = "//build/config/fuchsia/test/elf_test_ambient_exec_runner.shard.test-cml"
     additional_manifest_fragments = [
       "//build/config/fuchsia/test/audio_output.shard.test-cml",
       "//build/config/fuchsia/test/fonts.shard.test-cml",
@@ -2779,11 +2780,12 @@ test("content_unittests") {
       "../browser/renderer_host/media/fuchsia_media_codec_provider_impl_unittest.cc",
     ]
 
+    # TODO(https://crbug.com/1185811): Investigate removing the requirement for
+    # job_policy_ambient_mark_vmo_exec for the sake of V8's allocator in tests.
+    test_runner_shard = "//build/config/fuchsia/test/elf_test_ambient_exec_runner.shard.test-cml"
+
     additional_manifest_fragments = [
       "//build/config/fuchsia/test/fonts.shard.test-cml",
-
-      # TODO(https://crbug.com/1185811): Investigate removing the requirement
-      # for VmexResource.
       "//build/config/fuchsia/test/mark_vmo_executable.shard.test-cml",
       "//build/config/fuchsia/test/network.shard.test-cml",
       "//build/config/fuchsia/test/platform_video_codecs.shard.test-cml",

extensions/BUILD.gn

@@ -279,9 +279,11 @@ test("extensions_unittests") {
   ]
 
   if (is_fuchsia) {
+    # TODO(https://crbug.com/1185811): Investigate removing the requirement for
+    # job_policy_ambient_mark_vmo_exec for the sake of V8's allocator in tests.
+    test_runner_shard = "//build/config/fuchsia/test/elf_test_ambient_exec_runner.shard.test-cml"
+
     additional_manifest_fragments = [
-      # TODO(https://crbug.com/1185811): Investigate removing the requirement
-      # for VmexResource.
       "//build/config/fuchsia/test/mark_vmo_executable.shard.test-cml",
       "//build/config/fuchsia/test/network.shard.test-cml",
       "//third_party/fuchsia-sdk/sdk/pkg/vulkan/client.shard.cml",

fuchsia_web/runners/BUILD.gn

@@ -237,6 +237,8 @@ test("cast_runner_browsertests") {
     "//testing/gtest",
     "//ui/ozone",
   ]
+  test_runner_shard =
+      "//build/config/fuchsia/test/elf_test_ambient_exec_runner.shard.test-cml"
   additional_manifest_fragments = [
     "//build/config/fuchsia/test/mark_vmo_executable.shard.test-cml",
     "//build/config/fuchsia/test/network.shard.test-cml",

fuchsia_web/shell/cast_streaming_shell.cml

@@ -10,7 +10,7 @@
     // to function correctly.
     // TODO(crbug.com/1410937): Run as a non-test component.
     "//build/config/fuchsia/test/chromium_system_test_facet.shard.test-cml",
-    "//build/config/fuchsia/test/elf_test_runner.shard.test-cml",
+    "//build/config/fuchsia/test/elf_test_ambient_exec_runner.shard.test-cml",
     "sys/component/realm_builder_absolute.shard.cml",
 
     "syslog/client.shard.cml",

fuchsia_web/shell/cast_streaming_shell_for_web_instance_host.cml

@@ -19,6 +19,9 @@
       // component is running only as a launcher of this child.
       "--no-relaunch",
     ],
+
+    // Required to allow JIT in child processes such as renderers.
+    job_policy_ambient_mark_vmo_exec: "true",
   },
   use: [
     {

fuchsia_web/shell/web_engine_shell.cml

@@ -10,7 +10,7 @@
     // to function correctly.
     // TODO(crbug.com/1410937): Run as a non-test component.
     "//build/config/fuchsia/test/chromium_system_test_facet.shard.test-cml",
-    "//build/config/fuchsia/test/elf_test_runner.shard.test-cml",
+    "//build/config/fuchsia/test/elf_test_ambient_exec_runner.shard.test-cml",
     "sys/component/realm_builder_absolute.shard.cml",
 
     "syslog/client.shard.cml",

fuchsia_web/shell/web_engine_shell_for_web_instance_host.cml

@@ -19,6 +19,9 @@
       // is running only as a launcher of this child.
       "--no-relaunch",
     ],
+
+    // Required to allow JIT in child processes such as renderers.
+    job_policy_ambient_mark_vmo_exec: "true",
   },
   use: [
     // Required if not run with --headless.

fuchsia_web/webengine/BUILD.gn

@@ -616,6 +616,8 @@ test("web_engine_browsertests") {
     "//ui/ozone",
   ]
 
+  test_runner_shard =
+      "//build/config/fuchsia/test/elf_test_ambient_exec_runner.shard.test-cml"
   additional_manifest_fragments = [
     "//build/config/fuchsia/test/fonts.shard.test-cml",
     "//build/config/fuchsia/test/mark_vmo_executable.shard.test-cml",

fuchsia_web/webengine/web_instance-common.shard.cml

@@ -5,6 +5,9 @@
   program: {
     runner: "elf",
     binary: "web_engine_exe",
+
+    // Required to allow JIT in child processes such as renderers.
+    job_policy_ambient_mark_vmo_exec: "true",
   },
   capabilities: [
     {

gin/BUILD.gn

@@ -247,6 +247,9 @@ test("gin_unittests") {
   }
 
   if (is_fuchsia) {
+    # TODO(https://crbug.com/1185811): Investigate removing the requirement for
+    # job_policy_ambient_mark_vmo_exec for the sake of V8's allocator in tests.
+    test_runner_shard = "//build/config/fuchsia/test/elf_test_ambient_exec_runner.shard.test-cml"
     additional_manifest_fragments =
         [ "//build/config/fuchsia/test/mark_vmo_executable.shard.test-cml" ]
   }

headless/BUILD.gn

@@ -749,11 +749,12 @@ test("headless_browsertests") {
   }
 
   if (is_fuchsia) {
+    # TODO(https://crbug.com/1185811): Investigate removing the requirement for
+    # job_policy_ambient_mark_vmo_exec for the sake of V8's allocator in tests.
+    test_runner_shard = "//build/config/fuchsia/test/elf_test_ambient_exec_runner.shard.test-cml"
+
     additional_manifest_fragments = [
       "//build/config/fuchsia/test/fonts.shard.test-cml",
-
-      # TODO(https://crbug.com/1185811): Investigate removing the requirement
-      # for VmexResource.
       "//build/config/fuchsia/test/mark_vmo_executable.shard.test-cml",
       "//build/config/fuchsia/test/network.shard.test-cml",
       "//third_party/fuchsia-sdk/sdk/pkg/vulkan/client.shard.cml",

services/BUILD.gn

@@ -91,6 +91,8 @@ test("services_unittests") {
   }
 
   if (is_fuchsia) {
+    test_runner_shard = "//build/config/fuchsia/test/elf_test_ambient_exec_runner.shard.test-cml"
+
     additional_manifest_fragments = [
       "//build/config/fuchsia/test/mark_vmo_executable.shard.test-cml",
       "//build/config/fuchsia/test/network.shard.test-cml",

third_party/blink/common/BUILD.gn

@@ -382,9 +382,11 @@ test("blink_common_unittests") {
   if (is_ios) {
     bundle_deps = [ ":blink_common_unittests_pak_bundle_data" ]
   }
+
   if (is_fuchsia) {
-    additional_manifest_fragments =
+    # TODO(https://crbug.com/1185811): Investigate removing the requirement for
-        [ "//build/config/fuchsia/test/mark_vmo_executable.shard.test-cml" ]
+    # job_policy_ambient_mark_vmo_exec for the sake of V8's allocator in tests.
+    test_runner_shard = "//build/config/fuchsia/test/elf_test_ambient_exec_runner.shard.test-cml"
   }
 
   data_deps = [ ":common_unittests_data" ]

third_party/blink/renderer/controller/BUILD.gn

@@ -177,12 +177,12 @@ test("blink_unittests") {
   }
 
   if (is_fuchsia) {
+    # TODO(https://crbug.com/1185811): Investigate removing the requirement for
+    # job_policy_ambient_mark_vmo_exec for the sake of V8's allocator in tests.
+    test_runner_shard = "//build/config/fuchsia/test/elf_test_ambient_exec_runner.shard.test-cml"
     additional_manifest_fragments = [
       "//build/config/fuchsia/test/fonts.shard.test-cml",
       "//build/config/fuchsia/test/network.shard.test-cml",
-
-      # TODO(https://crbug.com/1185811): Investigate removing the requirement
-      # for VmexResource.
       "//build/config/fuchsia/test/mark_vmo_executable.shard.test-cml",
     ]
   }

third_party/blink/renderer/platform/BUILD.gn

@@ -1994,6 +1994,10 @@ test("blink_platform_unittests") {
       "//build/config/fuchsia/test/test_fonts.shard.test-cml",
       "//build/config/fuchsia/test/mark_vmo_executable.shard.test-cml",
     ]
+
+    # Oilpan reuses V8's v8::PageAllocator which generally requires JIT
+    # permissions.
+    test_runner_shard = "//build/config/fuchsia/test/elf_test_ambient_exec_runner.shard.test-cml"
   }
 
   if (is_android) {
@@ -2490,6 +2494,7 @@ test("blink_fuzzer_unittests") {
   }
 
   if (is_fuchsia) {
+    test_runner_shard = "//build/config/fuchsia/test/elf_test_ambient_exec_runner.shard.test-cml"
     additional_manifest_fragments = [
       "//build/config/fuchsia/test/test_fonts.shard.test-cml",
       "//build/config/fuchsia/test/mark_vmo_executable.shard.test-cml",

third_party/blink/renderer/platform/heap/BUILD.gn

@@ -127,11 +127,12 @@ test("blink_heap_unittests") {
   if (is_fuchsia) {
     additional_manifest_fragments = [
       "//build/config/fuchsia/test/test_fonts.shard.test-cml",
-
-      # Oilpan reuses V8's v8::PageAllocator which generally requires JIT
-      # permissions.
       "//build/config/fuchsia/test/mark_vmo_executable.shard.test-cml",
     ]
+
+    # Oilpan reuses V8's v8::PageAllocator which generally requires JIT
+    # permissions.
+    test_runner_shard = "//build/config/fuchsia/test/elf_test_ambient_exec_runner.shard.test-cml"
   }
 }
 
@@ -194,6 +195,7 @@ test("blink_heap_perftests") {
     # permissions.
     additional_manifest_fragments =
         [ "//build/config/fuchsia/test/mark_vmo_executable.shard.test-cml" ]
+    test_runner_shard = "//build/config/fuchsia/test/elf_test_ambient_exec_runner.shard.test-cml"
   }
 }
 

ui/accessibility/BUILD.gn

@@ -337,9 +337,11 @@ test("accessibility_unittests") {
     configs += [ "//v8:external_startup_data" ]
 
     if (is_fuchsia) {
+      # TODO(https://crbug.com/1185811): Investigate removing the requirement for
+      # job_policy_ambient_mark_vmo_exec for the sake of V8's allocator in tests.
+      test_runner_shard = "//build/config/fuchsia/test/elf_test_ambient_exec_runner.shard.test-cml"
+
       additional_manifest_fragments = [
-        # TODO(https://crbug.com/1185811): Investigate removing the requirement
-        # for VmexResource.
         "//build/config/fuchsia/test/mark_vmo_executable.shard.test-cml",
         "//build/config/fuchsia/test/network.shard.test-cml",
         "//third_party/fuchsia-sdk/sdk/pkg/vulkan/client.shard.cml",

ui/compositor/BUILD.gn

@@ -276,13 +276,10 @@ test("compositor_unittests") {
   }
 
   if (is_fuchsia) {
-    # TODO(https://crbug.com/1022542): Some of these tests use SwiftShader,
+    # TODO(https://crbug.com/1185811): Investigate removing the requirement for
-    # which requires ambient VMEX.
+    # job_policy_ambient_mark_vmo_exec for the sake of V8's allocator in tests.
     test_runner_shard = "//build/config/fuchsia/test/elf_test_ambient_exec_runner.shard.test-cml"
-
     additional_manifest_fragments = [
-      # TODO(https://crbug.com/1185811): Investigate removing the requirement
-      # for VmexResource.
       "//build/config/fuchsia/test/mark_vmo_executable.shard.test-cml",
       "//build/config/fuchsia/test/present_view.shard.test-cml",
       "//third_party/fuchsia-sdk/sdk/pkg/vulkan/client.shard.cml",

ui/snapshot/BUILD.gn

@@ -129,13 +129,11 @@ test("snapshot_unittests") {
   }
 
   if (is_fuchsia) {
-    # TODO(https://crbug.com/1022542): Some of these tests use SwiftShader,
+    # TODO(https://crbug.com/1185811): Investigate removing the requirement for
-    # which requires ambient VMEX.
+    # job_policy_ambient_mark_vmo_exec for the sake of V8's allocator in tests.
     test_runner_shard = "//build/config/fuchsia/test/elf_test_ambient_exec_runner.shard.test-cml"
 
     additional_manifest_fragments = [
-      # TODO(https://crbug.com/1185811): Investigate removing the requirement
-      # for VmexResource.
       "//build/config/fuchsia/test/mark_vmo_executable.shard.test-cml",
       "//build/config/fuchsia/test/present_view.shard.test-cml",
       "//third_party/fuchsia-sdk/sdk/pkg/vulkan/client.shard.cml",