cc: Use the correct internal format for glCopyTexImage2D calls.

android_webview/browser/parent_output_surface.cc

 // Copyright 2014 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.
 
 #include "android_webview/browser/parent_output_surface.h"
 
+#include "android_webview/browser/aw_render_thread_context_provider.h"
 #include "cc/output/output_surface_client.h"
 #include "gpu/command_buffer/client/gles2_interface.h"
 
 namespace android_webview {
 
 ParentOutputSurface::ParentOutputSurface(
-    scoped_refptr<cc::ContextProvider> context_provider)
+    scoped_refptr<AwRenderThreadContextProvider> context_provider)
     : cc::OutputSurface(std::move(context_provider), nullptr, nullptr) {
   stencil_state_.stencil_test_enabled = false;
 }
 
 ParentOutputSurface::~ParentOutputSurface() {
 }
 
 void ParentOutputSurface::DidLoseOutputSurface() {
   // Android WebView does not handle context loss.
   LOG(FATAL) << "Render thread context loss";
@@ skipping 23 matching lines @@
   gl->StencilMaskSeparate(GL_FRONT, stencil_state_.stencil_front_writemask);
   gl->StencilMaskSeparate(GL_BACK, stencil_state_.stencil_back_writemask);
   gl->StencilOpSeparate(GL_FRONT, stencil_state_.stencil_front_fail_op,
                         stencil_state_.stencil_front_z_fail_op,
                         stencil_state_.stencil_front_z_pass_op);
   gl->StencilOpSeparate(GL_BACK, stencil_state_.stencil_back_fail_op,
                         stencil_state_.stencil_back_z_fail_op,
                         stencil_state_.stencil_back_z_pass_op);
 }
 
+uint32_t ParentOutputSurface::GetFramebufferCopyTextureFormat() {
+  auto* gl = static_cast<AwRenderThreadContextProvider*>(context_provider());
+  return gl->GetCopyTextureInternalFormat();
+}
+
 void ParentOutputSurface::SetGLState(const ScopedAppGLStateRestore& gl_state) {
   stencil_state_ = gl_state.stencil_state();
   SetExternalStencilTest(stencil_state_.stencil_test_enabled);
 }
 
 }  // namespace android_webview