[Mojo Video Capture] Simplify media::VideoCaptureDevice::Client:Buffer to a struct

content/browser/renderer_host/media/video_capture_controller_unittest.cc

Index: content/browser/renderer_host/media/video_capture_controller_unittest.cc
diff --git a/content/browser/renderer_host/media/video_capture_controller_unittest.cc b/content/browser/renderer_host/media/video_capture_controller_unittest.cc
index 599f34e1ded58790deed403e599439e796be7c2e..09f1507fdcafd7057e0f79bd4d5549c7e9d70a0a 100644
--- a/content/browser/renderer_host/media/video_capture_controller_unittest.cc
+++ b/content/browser/renderer_host/media/video_capture_controller_unittest.cc
@@ -115,8 +115,6 @@ class MockFrameBufferPool : public media::FrameBufferPool {
  public:
   MOCK_METHOD1(SetBufferHold, void(int buffer_id));
   MOCK_METHOD1(ReleaseBufferHold, void(int buffer_id));
-  MOCK_METHOD1(GetHandleForTransit,
-               mojo::ScopedSharedBufferHandle(int buffer_id));
 };
 
 // Test class.
@@ -315,14 +313,14 @@ TEST_P(VideoCaptureControllerTest, NormalCaptureMultipleClients) {
   uint8_t buffer_no = 1;
   const int arbitrary_frame_feedback_id = 101;
   ASSERT_EQ(0.0, device_client_->GetBufferPoolUtilization());
-  std::unique_ptr<media::VideoCaptureDevice::Client::Buffer> buffer(
-      device_client_->ReserveOutputBuffer(device_format.frame_size,
-                                          device_format.pixel_format,
-                                          device_format.pixel_storage,
-                                          arbitrary_frame_feedback_id));
-  ASSERT_TRUE(buffer.get());
+  media::VideoCaptureDevice::Client::Buffer buffer =
+      device_client_->ReserveOutputBuffer(
+          device_format.frame_size, device_format.pixel_format,
+          device_format.pixel_storage, arbitrary_frame_feedback_id);
+  ASSERT_TRUE(buffer.is_valid());
+  auto buffer_access = buffer.access_provider->GetReadWriteAccess();
   ASSERT_EQ(1.0 / kPoolSize, device_client_->GetBufferPoolUtilization());
-  memset(buffer->data(), buffer_no++, buffer->mapped_size());
+  memset(buffer_access->data(), buffer_no++, buffer_access->mapped_size());
   {
     InSequence s;
     EXPECT_CALL(*client_a_, DoBufferCreated(client_a_route_1)).Times(1);
@@ -348,14 +346,14 @@ TEST_P(VideoCaptureControllerTest, NormalCaptureMultipleClients) {
   client_b_->resource_utilization_ = -1.0;
   {
     InSequence s;
-    EXPECT_CALL(*mock_frame_receiver_observer_, SetBufferHold(buffer->id()))
+    EXPECT_CALL(*mock_frame_receiver_observer_, SetBufferHold(buffer.id))
         .Times(1);
     // Expect VideoCaptureController to call the load observer with a
     // resource utilization of 0.5 (the largest of all reported values).
     EXPECT_CALL(*mock_consumer_feedback_observer_,
                 OnUtilizationReport(arbitrary_frame_feedback_id, 0.5))
         .Times(1);
-    EXPECT_CALL(*mock_frame_receiver_observer_, ReleaseBufferHold(buffer->id()))
+    EXPECT_CALL(*mock_frame_receiver_observer_, ReleaseBufferHold(buffer.id))
         .Times(1);
   }
 
@@ -374,28 +372,27 @@ TEST_P(VideoCaptureControllerTest, NormalCaptureMultipleClients) {
   // case pretend that the Buffer pointer is held by the device for a long
   // delay. This shouldn't affect anything.
   const int arbitrary_frame_feedback_id_2 = 102;
-  std::unique_ptr<media::VideoCaptureDevice::Client::Buffer> buffer2 =
-      device_client_->ReserveOutputBuffer(device_format.frame_size,
-                                          device_format.pixel_format,
-                                          device_format.pixel_storage,
-                                          arbitrary_frame_feedback_id_2);
-  ASSERT_TRUE(buffer2.get());
-  memset(buffer2->data(), buffer_no++, buffer2->mapped_size());
+  media::VideoCaptureDevice::Client::Buffer buffer2 =
+      device_client_->ReserveOutputBuffer(
+          device_format.frame_size, device_format.pixel_format,
+          device_format.pixel_storage, arbitrary_frame_feedback_id_2);
+  ASSERT_TRUE(buffer2.is_valid());
+  auto buffer2_access = buffer2.access_provider->GetReadWriteAccess();
+  memset(buffer2_access->data(), buffer_no++, buffer2_access->mapped_size());
   client_a_->resource_utilization_ = 0.5;
   client_b_->resource_utilization_ = 3.14;
   // Expect VideoCaptureController to call the load observer with a
   // resource utilization of 3.14 (the largest of all reported values).
   {
     InSequence s;
-    EXPECT_CALL(*mock_frame_receiver_observer_, SetBufferHold(buffer2->id()))
+    EXPECT_CALL(*mock_frame_receiver_observer_, SetBufferHold(buffer2.id))
         .Times(1);
     // Expect VideoCaptureController to call the load observer with a
     // resource utilization of 3.14 (the largest of all reported values).
     EXPECT_CALL(*mock_consumer_feedback_observer_,
                 OnUtilizationReport(arbitrary_frame_feedback_id_2, 3.14))
         .Times(1);
-    EXPECT_CALL(*mock_frame_receiver_observer_,
-                ReleaseBufferHold(buffer2->id()))
+    EXPECT_CALL(*mock_frame_receiver_observer_, ReleaseBufferHold(buffer2.id))
         .Times(1);
   }
 
@@ -442,13 +439,13 @@ TEST_P(VideoCaptureControllerTest, NormalCaptureMultipleClients) {
   // Third, fourth, and fifth buffers. Pretend they all arrive at the same time.
   for (int i = 0; i < kPoolSize; i++) {
     const int arbitrary_frame_feedback_id = 200 + i;
-    std::unique_ptr<media::VideoCaptureDevice::Client::Buffer> buffer =
-        device_client_->ReserveOutputBuffer(device_format.frame_size,
-                                            device_format.pixel_format,
-                                            device_format.pixel_storage,
-                                            arbitrary_frame_feedback_id);
-    ASSERT_TRUE(buffer.get());
-    memset(buffer->data(), buffer_no++, buffer->mapped_size());
+    media::VideoCaptureDevice::Client::Buffer buffer =
+        device_client_->ReserveOutputBuffer(
+            device_format.frame_size, device_format.pixel_format,
+            device_format.pixel_storage, arbitrary_frame_feedback_id);
+    ASSERT_TRUE(buffer.is_valid());
+    auto buffer_access = buffer.access_provider->GetReadWriteAccess();
+    memset(buffer_access->data(), buffer_no++, buffer_access->mapped_size());
     device_client_->OnIncomingCapturedBuffer(std::move(buffer),
       device_format,
       arbitrary_reference_time_,
@@ -456,11 +453,10 @@ TEST_P(VideoCaptureControllerTest, NormalCaptureMultipleClients) {
   }
   // ReserveOutputBuffer ought to fail now, because the pool is depleted.
   ASSERT_FALSE(device_client_
-                   ->ReserveOutputBuffer(device_format.frame_size,
-                                         device_format.pixel_format,
-                                         device_format.pixel_storage,
-                                         arbitrary_frame_feedback_id)
-                   .get());
+                   ->ReserveOutputBuffer(
+                       device_format.frame_size, device_format.pixel_format,
+                       device_format.pixel_storage, arbitrary_frame_feedback_id)
+                   .is_valid());
 
   // The new client needs to be notified of the creation of |kPoolSize| buffers;
   // the old clients only |kPoolSize - 2|.
@@ -494,31 +490,31 @@ TEST_P(VideoCaptureControllerTest, NormalCaptureMultipleClients) {
   EXPECT_CALL(*client_b_, DoEnded(client_b_route_1)).Times(1);
   controller_->StopSession(300);
   // Queue up another buffer.
-  std::unique_ptr<media::VideoCaptureDevice::Client::Buffer> buffer3 =
-      device_client_->ReserveOutputBuffer(device_format.frame_size,
-                                          device_format.pixel_format,
-                                          device_format.pixel_storage,
-                                          arbitrary_frame_feedback_id);
-  ASSERT_TRUE(buffer3.get());
-  memset(buffer3->data(), buffer_no++, buffer3->mapped_size());
+  media::VideoCaptureDevice::Client::Buffer buffer3 =
+      device_client_->ReserveOutputBuffer(
+          device_format.frame_size, device_format.pixel_format,
+          device_format.pixel_storage, arbitrary_frame_feedback_id);
+  ASSERT_TRUE(buffer3.is_valid());
+  auto buffer3_access = buffer3.access_provider->GetReadWriteAccess();
+  memset(buffer3_access->data(), buffer_no++, buffer3_access->mapped_size());
   device_client_->OnIncomingCapturedBuffer(std::move(buffer3),
     device_format,
     arbitrary_reference_time_,
     arbitrary_timestamp_);
 
-  std::unique_ptr<media::VideoCaptureDevice::Client::Buffer> buffer4 =
-      device_client_->ReserveOutputBuffer(device_format.frame_size,
-                                          device_format.pixel_format,
-                                          device_format.pixel_storage,
-                                          arbitrary_frame_feedback_id);
+  media::VideoCaptureDevice::Client::Buffer buffer4 =
+      device_client_->ReserveOutputBuffer(
+          device_format.frame_size, device_format.pixel_format,
+          device_format.pixel_storage, arbitrary_frame_feedback_id);
   {
     // Kill A2 via session close (posts a task to disconnect, but A2 must not
     // be sent either of these two buffers).
     EXPECT_CALL(*client_a_, DoEnded(client_a_route_2)).Times(1);
     controller_->StopSession(200);
   }
-  ASSERT_TRUE(buffer4.get());
-  memset(buffer4->data(), buffer_no++, buffer4->mapped_size());
+  ASSERT_TRUE(buffer4.is_valid());
+  auto buffer4_access = buffer4.access_provider->GetReadWriteAccess();
+  memset(buffer4_access->data(), buffer_no++, buffer4_access->mapped_size());
   device_client_->OnIncomingCapturedBuffer(std::move(buffer4),
     device_format,
     arbitrary_reference_time_,
@@ -568,12 +564,11 @@ TEST_F(VideoCaptureControllerTest, ErrorBeforeDeviceCreation) {
   media::VideoCaptureFormat device_format(
       capture_resolution, arbitrary_frame_rate_, media::PIXEL_FORMAT_I420,
       media::PIXEL_STORAGE_CPU);
-    const int arbitrary_frame_feedback_id = 101;
-  std::unique_ptr<media::VideoCaptureDevice::Client::Buffer> buffer(
-      device_client_->ReserveOutputBuffer(device_format.frame_size,
-                                          device_format.pixel_format,
-                                          device_format.pixel_storage,
-                                          arbitrary_frame_feedback_id));
+  const int arbitrary_frame_feedback_id = 101;
+  media::VideoCaptureDevice::Client::Buffer buffer =
+      device_client_->ReserveOutputBuffer(
+          device_format.frame_size, device_format.pixel_format,
+          device_format.pixel_storage, arbitrary_frame_feedback_id);
   device_client_->OnIncomingCapturedBuffer(std::move(buffer),
     device_format,
     arbitrary_reference_time_,
@@ -605,12 +600,11 @@ TEST_F(VideoCaptureControllerTest, ErrorAfterDeviceCreation) {
   media::VideoCaptureFormat device_format(
       gfx::Size(10, 10), arbitrary_frame_rate_, media::PIXEL_FORMAT_I420);
   const int arbitrary_frame_feedback_id = 101;
-  std::unique_ptr<media::VideoCaptureDevice::Client::Buffer> buffer(
-      device_client_->ReserveOutputBuffer(device_format.frame_size,
-                                          device_format.pixel_format,
-                                          device_format.pixel_storage,
-                                          arbitrary_frame_feedback_id));
-  ASSERT_TRUE(buffer.get());
+  media::VideoCaptureDevice::Client::Buffer buffer =
+      device_client_->ReserveOutputBuffer(
+          device_format.frame_size, device_format.pixel_format,
+          device_format.pixel_storage, arbitrary_frame_feedback_id);
+  ASSERT_TRUE(buffer.is_valid());
 
   device_client_->OnError(FROM_HERE, "Test Error");
   device_client_->OnIncomingCapturedBuffer(std::move(buffer),