Remove Mojo GLES2 API

components/mus/public/cpp/lib/context_provider.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 "components/mus/public/cpp/context_provider.h"
 
 #include <stdint.h>
 
 #include "base/logging.h"
 #include "components/mus/public/cpp/gles2_context.h"
 
 namespace mus {
 
 ContextProvider::ContextProvider(
     mojo::ScopedMessagePipeHandle command_buffer_handle)
     : command_buffer_handle_(std::move(command_buffer_handle)),
       context_(nullptr) {
 }
 
 bool ContextProvider::BindToCurrentThread() {
-  DCHECK(command_buffer_handle_.is_valid());
   std::unique_ptr<GLES2Context> context(new GLES2Context(
-      std::vector<int32_t>(), std::move(command_buffer_handle_),
-      &ContextLostThunk, this));
+      std::vector<int32_t>(), std::move(command_buffer_handle_)));
   if (context->Initialize())
     context_ = std::move(context);
   return !!context_;
 }
 
 gpu::gles2::GLES2Interface* ContextProvider::ContextGL() {
   return context_->interface();
 }
 
 gpu::ContextSupport* ContextProvider::ContextSupport() {
@@ skipping 18 matching lines @@
 
 base::Lock* ContextProvider::GetLock() {
   // This context provider is not used on multiple threads.
   NOTREACHED();
   return nullptr;
 }
 
 ContextProvider::~ContextProvider() {
 }
 
-void ContextProvider::ContextLost() {}
-
 }  // namespace mus