[CodeHealth] Spanify WebXR test code

Bug: 351564777
Change-Id: Ib298fe5406c9d1e8dff25e9e87515532dbd5cb29
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6130368
Auto-Submit: Alexander Cooper <alcooper@chromium.org>
Commit-Queue: Alexander Cooper <alcooper@chromium.org>
Reviewed-by: Brandon Jones <bajones@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1401551}

chrome/browser/vr/test/mock_xr_device_hook_base.cc

@@ -2,11 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifdef UNSAFE_BUFFERS_BUILD
-// TODO(crbug.com/40285824): Remove this and convert code to safer constructs.
-#pragma allow_unsafe_buffers
-#endif
-
 #include "chrome/browser/vr/test/mock_xr_device_hook_base.h"
 
 #include "content/public/test/xr_test_utils.h"
@@ -227,8 +222,7 @@ device::ControllerFrameData MockXRDeviceHookBase::CreateValidController(
   device::ControllerFrameData ret;
   // Because why shouldn't a 64 button controller exist?
   ret.supported_buttons = UINT64_MAX;
-  memset(ret.axis_data, 0,
-         sizeof(device::ControllerAxisData) * device::kMaxNumAxes);
+  std::ranges::fill(ret.axis_data, device::ControllerAxisData{});
   ret.role = role;
   ret.is_valid = true;
   // Identity matrix.

chrome/browser/vr/test/mock_xr_device_hook_base.h

@@ -63,8 +63,8 @@ class MockXRDeviceHookBase : public device_test::mojom::XRTestHook {
   void SetCanCreateSession(bool can_create_session);
 
  protected:
-  device_test::mojom::TrackedDeviceClass
-      tracked_classes_[device::kMaxTrackedDevices];
+  std::array<device_test::mojom::TrackedDeviceClass, device::kMaxTrackedDevices>
+      tracked_classes_;
   base::flat_map<unsigned int, device::ControllerFrameData>
       controller_data_map_;
   std::queue<device_test::mojom::EventData> event_data_queue_;

chrome/browser/vr/webxr_vr_input_browser_test.cc

@@ -2,11 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifdef UNSAFE_BUFFERS_BUILD
-// TODO(crbug.com/40285824): Remove this and convert code to safer constructs.
-#pragma allow_unsafe_buffers
-#endif
-
 #include <atomic>
 
 #include "base/containers/contains.h"
@@ -175,7 +170,8 @@ class WebXrControllerInputMock : public MockXRDeviceHookBase {
                          bool is_valid) {
     auto controller_data = GetCurrentControllerData(index);
     controller_data.pose_data.is_valid = is_valid;
-    device_to_origin.GetColMajorF(controller_data.pose_data.device_to_origin);
+    device_to_origin.GetColMajorF(
+        controller_data.pose_data.device_to_origin.data());
     UpdateControllerAndWait(index, controller_data);
   }
 
@@ -840,11 +836,11 @@ WEBXR_VR_ALL_RUNTIMES_BROWSER_TEST_F(TestControllerInputRegistered) {
 }
 
 std::string TransformToColMajorString(const gfx::Transform& t) {
-  float array[16];
-  t.GetColMajorF(array);
+  std::array<float, 16> array;
+  t.GetColMajorF(array.data());
   std::string array_string = "[";
-  for (int i = 0; i < 16; i++) {
-    array_string += base::NumberToString(array[i]) + ",";
+  for (const auto& val : array) {
+    array_string += base::NumberToString(val) + ",";
   }
   array_string.pop_back();
   array_string.push_back(']');

components/webxr/xr_test_hook_wrapper.cc

@@ -2,11 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifdef UNSAFE_BUFFERS_BUILD
-// TODO(crbug.com/342213636): Remove this and spanify to fix the errors.
-#pragma allow_unsafe_buffers
-#endif
-
 #include "components/webxr/xr_test_hook_wrapper.h"
 
 #include "base/task/single_thread_task_runner.h"
@@ -36,7 +31,7 @@ device::PoseFrameData MojoToDevicePoseFrameData(
   device::PoseFrameData ret = {};
   ret.is_valid = !!pose->device_to_origin;
   if (ret.is_valid) {
-    pose->device_to_origin->GetColMajorF(ret.device_to_origin);
+    pose->device_to_origin->GetColMajorF(ret.device_to_origin.data());
   }
 
   return ret;

device/vr/test/test_hook.h

@@ -2,11 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifdef UNSAFE_BUFFERS_BUILD
-// TODO(crbug.com/351564777): Remove this and convert code to safer constructs.
-#pragma allow_unsafe_buffers
-#endif
-
 #ifndef DEVICE_VR_TEST_TEST_HOOK_H_
 #define DEVICE_VR_TEST_TEST_HOOK_H_
 
@@ -89,14 +84,16 @@ struct ViewData {
 };
 
 struct PoseFrameData {
-  float device_to_origin[16];
+  std::array<float, 16> device_to_origin;
   bool is_valid;
 };
 
 struct DeviceConfig {
   float interpupillary_distance;
-  float viewport_left[4];   // raw projection left {left, right, top, bottom}
-  float viewport_right[4];  // raw projection right {left, right, top, bottom}
+  std::array<float, 4>
+      viewport_left;  // raw projection left {left, right, top, bottom}
+  std::array<float, 4>
+      viewport_right;  // raw projection right {left, right, top, bottom}
 };
 
 struct ControllerAxisData {
@@ -140,10 +137,10 @@ struct COMPONENT_EXPORT(VR_TEST_HOOK) ControllerFrameData {
   uint64_t buttons_pressed = 0;
   uint64_t buttons_touched = 0;
   uint64_t supported_buttons = 0;
-  ControllerAxisData axis_data[kMaxNumAxes];
+  std::array<ControllerAxisData, kMaxNumAxes> axis_data;
   PoseFrameData pose_data = {};
   ControllerRole role = kControllerRoleInvalid;
-  XRHandJointData hand_data[kNumJointsForTest];
+  std::array<XRHandJointData, kNumJointsForTest> hand_data;
   bool has_hand_data = false;
   bool is_valid = false;
 
@@ -159,7 +156,7 @@ inline gfx::Transform PoseFrameDataToTransform(PoseFrameData data) {
   // we're given data in column-major order. Construct in column-major order and
   // transpose since it looks cleaner than manually transposing the arguments
   // passed to the constructor.
-  float* t = data.device_to_origin;
+  auto& t = data.device_to_origin;
   return gfx::Transform::ColMajor(t[0], t[1], t[2], t[3], t[4], t[5], t[6],
                                   t[7], t[8], t[9], t[10], t[11], t[12], t[13],
                                   t[14], t[15]);