cc: Use the correct internal format for glCopyTexImage2D calls.

content/browser/compositor/gpu_browser_compositor_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 "content/browser/compositor/gpu_browser_compositor_output_surface.h"
 
 #include <utility>
 
 #include "build/build_config.h"
 #include "cc/output/compositor_frame.h"
@@ skipping 47 matching lines @@
       swap_buffers_completion_callback_.callback());
   GetCommandBufferProxy()->SetUpdateVSyncParametersCallback(
       update_vsync_parameters_callback_.callback());
   if (capabilities_.uses_default_gl_framebuffer) {
     capabilities_.flipped_output_surface =
         context_provider()->ContextCapabilities().flips_vertically;
   }
   return true;
 }
 
+uint32_t GpuBrowserCompositorOutputSurface::GetFramebufferCopyTextureFormat() {
+  auto* gl = static_cast<ContextProviderCommandBuffer*>(context_provider());
+  return gl->GetCopyTextureInternalFormat();
+}
+
 void GpuBrowserCompositorOutputSurface::OnReflectorChanged() {
   if (!reflector_) {
     reflector_texture_.reset();
   } else {
     reflector_texture_.reset(new ReflectorTexture(context_provider()));
     reflector_->OnSourceTextureMailboxUpdated(reflector_texture_->mailbox());
   }
 }
 
 void GpuBrowserCompositorOutputSurface::SwapBuffers(
@@ skipping 32 matching lines @@
   RenderWidgetHostImpl::CompositorFrameDrawn(latency_info);
   OnSwapBuffersComplete();
 }
 
 #if defined(OS_MACOSX)
 void GpuBrowserCompositorOutputSurface::SetSurfaceSuspendedForRecycle(
     bool suspended) {}
 #endif
 
 }  // namespace content