Impl mus::mojom::GpuService to enable using Chrome IPC version gpu CmdBuf in mus

components/mus/public/cpp/gles2_context.h

Index: components/mus/public/cpp/gles2_context.h
diff --git a/components/mus/public/cpp/gles2_context.h b/components/mus/public/cpp/gles2_context.h
index 805e667506d41dcd76046d87cb78f0027ee9ab4e..da81e95536c86e95b1524d7444ca1ec4602eac30 100644
--- a/components/mus/public/cpp/gles2_context.h
+++ b/components/mus/public/cpp/gles2_context.h
@@ -11,23 +11,26 @@
 #include <vector>
 
 #include "base/macros.h"
-#include "components/mus/public/cpp/lib/command_buffer_client_impl.h"
+#include "components/mus/public/cpp/mus_public_export.h"
 #include "gpu/command_buffer/client/gles2_implementation.h"
 #include "mojo/public/c/gles2/gles2.h"
+#include "mojo/public/cpp/bindings/binding.h"
 
 struct MojoGLES2ContextPrivate {};
 
 namespace gpu {
+class CommandBufferProxyImpl;
 class TransferBuffer;
 namespace gles2 {
 class GLES2CmdHelper;
-class GLES2Implementation;
 }
 }
 
 namespace mus {
 
-class GLES2Context : public MojoGLES2ContextPrivate {
+class CommandBufferClientImpl;
+
+class MUS_PUBLIC_EXPORT GLES2Context : public MojoGLES2ContextPrivate {
  public:
   explicit GLES2Context(const std::vector<int32_t>& attribs,
                         mojo::ScopedMessagePipeHandle command_buffer_handle,
@@ -44,7 +47,8 @@ class GLES2Context : public MojoGLES2ContextPrivate {
  private:
   void OnLostContext();
 
-  CommandBufferClientImpl command_buffer_;
+  std::unique_ptr<CommandBufferClientImpl> command_buffer_client_impl_;
+  std::unique_ptr<gpu::CommandBufferProxyImpl> command_buffer_proxy_impl_;
   std::unique_ptr<gpu::gles2::GLES2CmdHelper> gles2_helper_;
   std::unique_ptr<gpu::TransferBuffer> transfer_buffer_;
   std::unique_ptr<gpu::gles2::GLES2Implementation> implementation_;