cc: Use the correct internal format for glCopyTexImage2D calls.

blimp/client/feature/compositor/blimp_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 BLIMP_CLIENT_FEATURE_COMPOSITOR_BLIMP_CONTEXT_PROVIDER_H_
 #define BLIMP_CLIENT_FEATURE_COMPOSITOR_BLIMP_CONTEXT_PROVIDER_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 25 matching lines @@
   gpu::Capabilities ContextCapabilities() override;
   gpu::gles2::GLES2Interface* ContextGL() override;
   gpu::ContextSupport* ContextSupport() override;
   class GrContext* GrContext() override;
   void InvalidateGrContext(uint32_t state) override;
   base::Lock* GetLock() override;
   void DeleteCachedResources() override;
   void SetLostContextCallback(
       const LostContextCallback& lost_context_callback) override;
 
+  // Gives the GL internal format that should be used for calling CopyTexImage2D
+  // on the default framebuffer.
+  uint32_t GetCopyTextureInternalFormat();
+
  protected:
   BlimpContextProvider(
       gfx::AcceleratedWidget widget,
       gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager);
   ~BlimpContextProvider() override;
 
  private:
   void OnLostContext();
 
   base::ThreadChecker main_thread_checker_;
   base::ThreadChecker context_thread_checker_;
 
   std::unique_ptr<gpu::GLInProcessContext> context_;
   std::unique_ptr<skia_bindings::GrContextForGLES2Interface> gr_context_;
 
   LostContextCallback lost_context_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(BlimpContextProvider);
 };
 
 }  // namespace client
 }  // namespace blimp
 
 #endif  // BLIMP_CLIENT_FEATURE_COMPOSITOR_BLIMP_CONTEXT_PROVIDER_H_