cc: Route offscreen context creation for compositor to the browser.

cc/ganesh_resource_provider.cc

Index: cc/ganesh_resource_provider.cc
diff --git a/cc/ganesh_resource_provider.cc b/cc/ganesh_resource_provider.cc
new file mode 100644
index 0000000000000000000000000000000000000000..3617a4a9696a2a81e3e798db11aafc2f4e28c1bd
--- /dev/null
+++ b/cc/ganesh_resource_provider.cc
@@ -0,0 +1,43 @@
+// Copyright 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 "cc/ganesh_resource_provider.h"
+
+#include "cc/resource_provider.h"
+#include "third_party/WebKit/Source/Platform/chromium/public/WebGraphicsContext3D.h"
+#include "third_party/skia/include/gpu/GrContext.h"
+
+namespace cc {
+
+GaneshResourceProvider::GaneshResourceProvider()
+    : context3d_(NULL),
+      gr_context_(NULL) {
+}
+
+GaneshResourceProvider::~GaneshResourceProvider() {}
+
+GaneshResourceProvider::ScopedContexts::ScopedContexts(
+    GaneshResourceProvider* ganesh_resource_provider)
+    : ganesh_resource_provider_(ganesh_resource_provider) {
+}
+
+GaneshResourceProvider::ScopedContexts::~ScopedContexts() {}
+
+GaneshResourceProvider::ScopedContextsFlushed::ScopedContextsFlushed(
+    ResourceProvider* resource_provider,
+    GaneshResourceProvider* ganesh_resource_provider)
+    : ScopedContexts(ganesh_resource_provider) {
+  resource_provider->flush();
+}
+
+GaneshResourceProvider::ScopedContextsFlushed::~ScopedContextsFlushed() {
+  // Flush ganesh context so that all the rendered stuff appears on the
+  // texture.
+  if (gr_context()) gr_context()->flush();
+  // Flush the GL context so rendering results from this context are
+  // visible in the compositor's context.
+  if (context3d()) context3d()->flush();
+}
+
+}  // namespace cc