1 files changed, 76 insertions, 0 deletions
diff --git a/chromium/ui/compositor/context_provider_from_context_factory.cc b/chromium/ui/compositor/context_provider_from_context_factory.cc
new file mode 100644
index 00000000000..262998a886a
--- /dev/null
+++ b/chromium/ui/compositor/context_provider_from_context_factory.cc
@@ -0,0 +1,76 @@
+// 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