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 e250553aba61d6018a5a16abead22ca3940f83a2..5bbd73193109df70992d11f45ee310e45542e501 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)
@@ -3907,13 +3907,15 @@ 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)