aura: Remove CreateOffscreenContext from ui::ContextFactory.

ui/compositor/context_provider_from_context_factory.cc

Index: ui/compositor/context_provider_from_context_factory.cc
diff --git a/ui/compositor/context_provider_from_context_factory.cc b/ui/compositor/context_provider_from_context_factory.cc
deleted file mode 100644
index 262998a886ad138285cf8878b9fb40c51d199bc8..0000000000000000000000000000000000000000
--- a/ui/compositor/context_provider_from_context_factory.cc
+++ /dev/null
@@ -1,76 +0,0 @@
-// Copyright (c) 2013 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 "context_provider_from_context_factory.h"
-
-#include "base/logging.h"
-
-namespace ui {
-
-// static
-scoped_refptr<ContextProviderFromContextFactory>
-ContextProviderFromContextFactory::CreateForOffscreen(ContextFactory* factory) {
-  scoped_refptr<ContextProviderFromContextFactory> provider =
-      new ContextProviderFromContextFactory(factory);
-  if (!provider->InitializeOnMainThread())
-    return NULL;
-  return provider;
-}
-
-ContextProviderFromContextFactory::ContextProviderFromContextFactory(
-    ContextFactory* factory)
-    : factory_(factory),
-      destroyed_(false) {
-}
-
-ContextProviderFromContextFactory::~ContextProviderFromContextFactory() {
-}
-
-bool ContextProviderFromContextFactory::BindToCurrentThread() {
-  DCHECK(context3d_);
-  return context3d_->makeContextCurrent();
-}
-
-WebKit::WebGraphicsContext3D* ContextProviderFromContextFactory::Context3d() {
-  DCHECK(context3d_);
-  return context3d_.get();
-}
-
-class GrContext* ContextProviderFromContextFactory::GrContext() {
-  DCHECK(context3d_);
-
-  if (!gr_context_) {
-    gr_context_.reset(
-        new webkit::gpu::GrContextForWebGraphicsContext3D(context3d_.get()));
-  }
-  return gr_context_->get();
-}
-
-void ContextProviderFromContextFactory::VerifyContexts() {
-  DCHECK(context3d_);
-
-  if (context3d_->isContextLost()) {
-    base::AutoLock lock(destroyed_lock_);
-    destroyed_ = true;
-  }
-}
-
-bool ContextProviderFromContextFactory::DestroyedOnMainThread() {
-  base::AutoLock lock(destroyed_lock_);
-  return destroyed_;
-}
-
-void ContextProviderFromContextFactory::SetLostContextCallback(
-    const LostContextCallback& cb) {
-  NOTIMPLEMENTED();
-}
-
-bool ContextProviderFromContextFactory::InitializeOnMainThread() {
-  if (context3d_)
-    return true;
-  context3d_ = factory_->CreateOffscreenContext();
-  return !!context3d_;
-}
-
-}  // namespace ui