cc: Use the correct internal format for glCopyTexImage2D calls.

android_webview/browser/aw_render_thread_context_provider.h

 // Copyright 2015 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.
 
 #ifndef ANDROID_WEBVIEW_BROWSER_AW_RENDER_THREAD_CONTEXT_PROVIDER_H_
 #define ANDROID_WEBVIEW_BROWSER_AW_RENDER_THREAD_CONTEXT_PROVIDER_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 14 matching lines @@
 }
 
 namespace android_webview {
 
 class AwRenderThreadContextProvider : public cc::ContextProvider {
  public:
   static scoped_refptr<AwRenderThreadContextProvider> Create(
       scoped_refptr<gl::GLSurface> surface,
       scoped_refptr<gpu::InProcessCommandBuffer::Service> service);
 
+  // Gives the GL internal format that should be used for calling CopyTexImage2D
+  // on the default framebuffer.
+  uint32_t GetCopyTextureInternalFormat();
+
  private:
   AwRenderThreadContextProvider(
       scoped_refptr<gl::GLSurface> surface,
       scoped_refptr<gpu::InProcessCommandBuffer::Service> service);
   ~AwRenderThreadContextProvider() override;
 
   // cc::ContextProvider:
   bool BindToCurrentThread() override;
   gpu::Capabilities ContextCapabilities() override;
   gpu::gles2::GLES2Interface* ContextGL() override;
@@ skipping 13 matching lines @@
   sk_sp<class GrContext> gr_context_;
 
   LostContextCallback lost_context_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(AwRenderThreadContextProvider);
 };
 
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_BROWSER_AW_RENDER_THREAD_CONTEXT_PROVIDER_H_