Copy NV12 picture buffers on demand on the main thread.

gpu/command_buffer/service/gles2_cmd_decoder_unittest_textures.cc

Index: gpu/command_buffer/service/gles2_cmd_decoder_unittest_textures.cc
diff --git a/gpu/command_buffer/service/gles2_cmd_decoder_unittest_textures.cc b/gpu/command_buffer/service/gles2_cmd_decoder_unittest_textures.cc
index 0b167790a8878e26f804351e11257870c9b15da5..a392c459c8f24af9650bb1209c5f155869f37373 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder_unittest_textures.cc
+++ b/gpu/command_buffer/service/gles2_cmd_decoder_unittest_textures.cc
@@ -3871,8 +3871,8 @@ TEST_P(GLES2DecoderWithShaderTest, CopyTexImage) {
 
   // Bind image to texture.
   EXPECT_CALL(*image.get(), BindTexImage(GL_TEXTURE_2D))
-      .Times(1)
-      .WillOnce(Return(false))
+      .Times(2)
+      .WillRepeatedly(Return(false))
       .RetiresOnSaturation();
   EXPECT_CALL(*image.get(), GetSize())
       .Times(1)
@@ -3882,6 +3882,9 @@ TEST_P(GLES2DecoderWithShaderTest, CopyTexImage) {
       .Times(1)
       .WillOnce(Return(GL_RGBA))
       .RetiresOnSaturation();
+  EXPECT_CALL(*gl_, BindTexture(GL_TEXTURE_2D, kServiceTextureId))
+      .Times(1)
+      .RetiresOnSaturation();
   // ScopedGLErrorSuppressor calls GetError on its constructor and destructor.
   DoBindTexImage2DCHROMIUM(GL_TEXTURE_2D, kImageId);
 
@@ -3907,13 +3910,15 @@ TEST_P(GLES2DecoderWithShaderTest, CopyTexImage) {
   EXPECT_EQ(GL_NO_ERROR, GetGLError());
 
   DoBindTexture(GL_TEXTURE_2D, client_texture_id_, kServiceTextureId);
+
+  Mock::VerifyAndClearExpectations(gl_.get());
   // Re-bind image to texture.
   ReleaseTexImage2DCHROMIUM release_tex_image_2d_cmd;
   release_tex_image_2d_cmd.Init(GL_TEXTURE_2D, kImageId);
   EXPECT_EQ(error::kNoError, ExecuteCmd(release_tex_image_2d_cmd));
   EXPECT_CALL(*image.get(), BindTexImage(GL_TEXTURE_2D))
-      .Times(1)
-      .WillOnce(Return(false))
+      .Times(2)
+      .WillRepeatedly(Return(false))
       .RetiresOnSaturation();
   EXPECT_CALL(*image.get(), GetSize())
       .Times(1)