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

content/renderer/gpu/render_widget_compositor.cc

Index: content/renderer/gpu/render_widget_compositor.cc
diff --git a/content/renderer/gpu/render_widget_compositor.cc b/content/renderer/gpu/render_widget_compositor.cc
index 311e175cdcb1ecad3177c9a6792f2c65960cbe51..1aa0c848821224075f98cd9e623fa55ce5bc7917 100644
--- a/content/renderer/gpu/render_widget_compositor.cc
+++ b/content/renderer/gpu/render_widget_compositor.cc
@@ -17,6 +17,7 @@
 #include "content/renderer/gpu/compositor_thread.h"
 #include "content/renderer/render_thread_impl.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebLayerTreeViewClient.h"
+#include "third_party/WebKit/Source/Platform/chromium/public/WebSharedGraphicsContext3D.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebSize.h"
 #include "webkit/compositor_bindings/web_layer_impl.h"
 #include "webkit/compositor_bindings/web_to_ccinput_handler_adapter.h"
@@ -340,6 +341,29 @@ void RenderWidgetCompositor::didRecreateOutputSurface(bool success) {
   client_->didRecreateOutputSurface(success);
 }
 
+// TODO(danakj): This hook is just meant for testing, remove it when we track
+// losing the offscreen context in the embedder! The getter methods should
+// return a new valid context after a loss automatically.
+void RenderWidgetCompositor::willRetryRecreateOutputSurface() {
+  if (WebKit::WebSharedGraphicsContext3D::haveCompositorThreadContext())
+    WebKit::WebSharedGraphicsContext3D::createCompositorThreadContext();
+}
+
+// TODO(danakj): This should go through WebWidget
+WebKit::WebGraphicsContext3D* RenderWidgetCompositor::
+    OffscreenContext3dForMainThread() {
+  return WebKit::WebSharedGraphicsContext3D::mainThreadContext();
+}
+
+// TODO(danakj): This should go through WebWidget
+WebKit::WebGraphicsContext3D* RenderWidgetCompositor::
+    OffscreenContext3dForCompositorThread() {
+  if (!WebKit::WebSharedGraphicsContext3D::haveCompositorThreadContext() &&
+      !WebKit::WebSharedGraphicsContext3D::createCompositorThreadContext())
+    return NULL;
+  return WebKit::WebSharedGraphicsContext3D::compositorThreadContext();
+}
+
 // TODO(jamesr): This should go through WebWidget
 scoped_ptr<cc::InputHandler> RenderWidgetCompositor::createInputHandler() {
   scoped_ptr<cc::InputHandler> ret;