Remove Mojo GLES2 API

components/mus/public/cpp/context_provider.h

 // 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.
 
 #ifndef COMPONENTS_MUS_PUBLIC_CPP_CONTEXT_PROVIDER_H_
 #define COMPONENTS_MUS_PUBLIC_CPP_CONTEXT_PROVIDER_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 20 matching lines @@
   gpu::Capabilities ContextCapabilities() override;
   void DeleteCachedResources() override {}
   void SetLostContextCallback(
       const LostContextCallback& lost_context_callback) override {}
 
  protected:
   friend class base::RefCountedThreadSafe<ContextProvider>;
   ~ContextProvider() override;
 
  private:
-  static void ContextLostThunk(void* closure) {
-    static_cast<ContextProvider*>(closure)->ContextLost();
-  }
-  void ContextLost();
-
   mojo::ScopedMessagePipeHandle command_buffer_handle_;
   std::unique_ptr<GLES2Context> context_;
 
   DISALLOW_COPY_AND_ASSIGN(ContextProvider);
 };
 
 }  // namespace mus
 
 #endif  // COMPONENTS_MUS_PUBLIC_CPP_CONTEXT_PROVIDER_H_