[Autofill] Expose Autofill features to webview.

This CL exposes autofill features to webview and adds feature toggles
for structures names and addresses.

Change-Id: Ic772422320545f1a4009d1fb63379ef5496ea4bd
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3100127
Reviewed-by: Michael Bai <michaelbai@chromium.org>
Commit-Queue: Matthias Körber <koerber@google.com>
Cr-Commit-Position: refs/heads/main@{#913148}

android_webview/BUILD.gn

@@ -774,6 +774,7 @@ android_library("common_java") {
   deps = [
     "//base:base_java",
     "//cc/base:cc_base_java",
+    "//components/autofill/android:autofill_features_java",
     "//components/metrics:metrics_java",
     "//components/power_scheduler:power_scheduler_java",
     "//components/viz:viz_java",

android_webview/java/src/org/chromium/android_webview/common/ProductionSupportedFlagList.java

@@ -7,6 +7,7 @@ package org.chromium.android_webview.common;
 import org.chromium.base.BaseSwitches;
 import org.chromium.blink_public.common.BlinkFeatures;
 import org.chromium.cc.base.CcSwitches;
+import org.chromium.components.autofill.AutofillFeatures;
 import org.chromium.components.metrics.MetricsSwitches;
 import org.chromium.components.power_scheduler.PowerSchedulerFeatures;
 import org.chromium.components.viz.common.VizFeatures;
@@ -141,6 +142,13 @@ public final class ProductionSupportedFlagList {
             Flag.baseFeature(BlinkFeatures.GMS_CORE_EMOJI,
                     "Enables retrieval of the emoji font through GMS Core "
                             + "improving emoji glyph coverage."),
+            Flag.baseFeature(AutofillFeatures.AUTOFILL_ENABLE_SUPPORT_FOR_MORE_STRUCTURE_IN_NAMES,
+                    "Enables support for names with a rich structure including multiple last "
+                            + "names."),
+            Flag.baseFeature(
+                    AutofillFeatures.AUTOFILL_ENABLE_SUPPORT_FOR_MORE_STRUCTURE_IN_ADDRESSES,
+                    "Enables support for address with a rich structure including separate street "
+                            + "names and house numberse."),
             Flag.baseFeature(
                     NetworkServiceFeatures.TRUST_TOKENS, "Enables the prototype Trust Tokens API."),
             Flag.baseFeature(AwFeatures.WEBVIEW_APPS_PACKAGE_NAMES_ALLOWLIST,

components/autofill/android/BUILD.gn

@@ -36,6 +36,13 @@ java_cpp_enum("autofill_core_browser_java_enums") {
   ]
 }
 
+java_cpp_features("java_features_srcjar") {
+  visibility = [ ":*" ]
+  sources = [ "//components/autofill/core/common/autofill_features.cc" ]
+  template =
+      "//components/autofill/android/java_templates/AutofillFeatures.java.tmpl"
+}
+
 android_library("full_autofill_java") {
   deps = [
     ":autofill_java_resources",
@@ -59,6 +66,11 @@ android_library("full_autofill_java") {
   resources_package = "org.chromium.components.autofill"
 }
 
+# A minimal library used to expose autofill features to webview.
+android_library("autofill_features_java") {
+  srcjar_deps = [ ":java_features_srcjar" ]
+}
+
 # A library containing the minimal deps for payments, so that ui_java_resources
 # doesn't have to be pulled in.
 android_library("payments_autofill_java") {

components/autofill/android/java_templates/AutofillFeatures.java.tmpl

@@ -0,0 +1,16 @@
+// Copyright 2021 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.components.autofill;
+
+/**
+ * Contains features that are specific to the autofill component.
+ */
+public final class AutofillFeatures {{
+
+{NATIVE_FEATURES}
+
+    // Prevents instantiation.
+    private AutofillFeatures() {{}}
+}}

tools/metrics/histograms/enums.xml

@@ -48449,6 +48449,8 @@ from previous Chrome versions.
   <int value="-832561975" label="enable-picture-in-picture"/>
   <int value="-831066457" label="IncognitoBrandConsistencyForDesktop:disabled"/>
   <int value="-825942229" label="tab-management-experiment-type-elderberry"/>
+  <int value="-825747847"
+      label="AutofillEnableSupportForMoreStructureInAddresses:enabled"/>
   <int value="-824199802" label="ContextualSearchSimplifiedServer:enabled"/>
   <int value="-823394398" label="TargetEmbeddingLookalikes:enabled"/>
   <int value="-823165021" label="MaterialDesignUserMenu:enabled"/>
@@ -48618,6 +48620,8 @@ from previous Chrome versions.
   <int value="-695687521" label="double-buffer-compositing"/>
   <int value="-694622753" label="VizHitTest:disabled"/>
   <int value="-694187898" label="MashOopViz:disabled"/>
+  <int value="-693881124"
+      label="AutofillEnableSupportForMoreStructureInNames:disabled"/>
   <int value="-688003116" label="FocusFollowsCursor:enabled"/>
   <int value="-687302378" label="BluetoothFixA2dpPacketSize:enabled"/>
   <int value="-686788480" label="OsSettingsAppNotificationsPage:enabled"/>
@@ -50757,6 +50761,8 @@ from previous Chrome versions.
   <int value="1070449228" label="ContextualSuggestionsCarousel:enabled"/>
   <int value="1070840417" label="ChromeColors:enabled"/>
   <int value="1071520357" label="WebAuthenticationTouchId:enabled"/>
+  <int value="1071962531"
+      label="AutofillEnableSupportForMoreStructureInAddresses:disabled"/>
   <int value="1072010558" label="NTPModernLayout:disabled"/>
   <int value="1072517479" label="ImprovedCookieControls:enabled"/>
   <int value="1074359194" label="UseSuggestionsEvenIfFew:enabled"/>
@@ -51562,6 +51568,8 @@ from previous Chrome versions.
   <int value="1707873180"
       label="OmniboxOnFocusSuggestionsContextualWebAllowSRP:disabled"/>
   <int value="1708118086" label="TextFragmentAnchor:disabled"/>
+  <int value="1710630380"
+      label="AutofillEnableSupportForMoreStructureInNames:enabled"/>
   <int value="1711286384" label="ContextMenuCopyImage:disabled"/>
   <int value="1712622545" label="Memories:disabled"/>
   <int value="1712697097" label="QuickAnswersV2:disabled"/>