Remove ContextProvider::IsContextLost.

components/view_manager/surfaces/surfaces_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/view_manager/surfaces/surfaces_context_provider.h"
 
 #include "base/logging.h"
 #include "third_party/mojo/src/mojo/public/cpp/environment/environment.h"
 
 namespace surfaces {
 
 SurfacesContextProvider::SurfacesContextProvider(
     mojo::ScopedMessagePipeHandle command_buffer_handle)
-    : command_buffer_handle_(command_buffer_handle.Pass()),
-      context_(nullptr),
-      context_lost_(false) {
+    : command_buffer_handle_(command_buffer_handle.Pass()), context_(nullptr) {
 }
 
 bool SurfacesContextProvider::BindToCurrentThread() {
   DCHECK(command_buffer_handle_.is_valid());
   context_ = MojoGLES2CreateContext(command_buffer_handle_.release().value(),
                                     &ContextLostThunk, this,
                                     mojo::Environment::GetDefaultAsyncWaiter());
   DCHECK(context_);
   return !!context_;
 }
@@ skipping 24 matching lines @@
   return capabilities_;
 }
 
 void SurfacesContextProvider::SetupLock() {
 }
 
 base::Lock* SurfacesContextProvider::GetLock() {
   return &context_lock_;
 }
 
-bool SurfacesContextProvider::IsContextLost() {
-  return context_lost_;
-}
 bool SurfacesContextProvider::DestroyedOnMainThread() {
   return !context_;
 }
 
 void SurfacesContextProvider::SetLostContextCallback(
     const LostContextCallback& lost_context_callback) {
   lost_context_callback_ = lost_context_callback;
 }
 
 SurfacesContextProvider::~SurfacesContextProvider() {
   if (context_)
     MojoGLES2DestroyContext(context_);
 }
 
 void SurfacesContextProvider::ContextLost() {
-  context_lost_ = true;
   if (!lost_context_callback_.is_null())
     lost_context_callback_.Run();
 }
 
 }  // namespace surfaces