Revert of Report lost context from GLES2Implementation based on share group state.

gpu/command_buffer/tests/gl_manager.cc

 // Copyright (c) 2012 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 "gpu/command_buffer/tests/gl_manager.h"
 
 #include <GLES2/gl2.h>
 #include <GLES2/gl2ext.h>
 #include <GLES2/gl2extchromium.h>
 #include <stddef.h>
@@ skipping 566 matching lines @@
 }
 
 void GLManager::SignalQuery(uint32_t query, const base::Closure& callback) {
   NOTIMPLEMENTED();
 }
 
 void GLManager::SetLock(base::Lock*) {
   NOTIMPLEMENTED();
 }
 
+bool GLManager::IsGpuChannelLost() {
+  NOTIMPLEMENTED();
+  return false;
+}
+
 void GLManager::EnsureWorkVisible() {
   // This is only relevant for out-of-process command buffers.
 }
 
 gpu::CommandBufferNamespace GLManager::GetNamespaceID() const {
   return gpu::CommandBufferNamespace::IN_PROCESS;
 }
 
 CommandBufferId GLManager::GetCommandBufferID() const {
   return command_buffer_id_;
@@ skipping 35 matching lines @@
 
   // Something went wrong, just run the callback now.
   callback.Run();
 }
 
 bool GLManager::CanWaitUnverifiedSyncToken(const gpu::SyncToken* sync_token) {
   return false;
 }
 
 }  // namespace gpu