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

content/browser/renderer_host/compositor_impl_android.cc

Index: content/browser/renderer_host/compositor_impl_android.cc
diff --git a/content/browser/renderer_host/compositor_impl_android.cc b/content/browser/renderer_host/compositor_impl_android.cc
index 7954175feea775ff47621cde2141af9af49b1bd5..75598825173c415af1e5c26a671207e8e4a5a21d 100644
--- a/content/browser/renderer_host/compositor_impl_android.cc
+++ b/content/browser/renderer_host/compositor_impl_android.cc
@@ -29,6 +29,7 @@
 #include "third_party/WebKit/Source/Platform/chromium/public/WebGraphicsContext3D.h"
 #include "ui/gfx/android/java_bitmap.h"
 #include "webkit/glue/webthread_impl.h"
+#include "webkit/gpu/context_provider.h"

[piman, 2013/02/22 02:54:07]

You probably meant to fix this and some other instances below.

[danakj, 2013/02/22 03:04:49]

oops missed that, thanks.

 #include "webkit/gpu/webgraphicscontext3d_in_process_impl.h"
 
 namespace gfx {
@@ -326,6 +327,31 @@ void CompositorImpl::scheduleComposite() {
   client_->ScheduleComposite();
 }
 
+class NullContextProvider : public webkit::gpu::ContextProvider {
+  // TODO(danakj): Get a context through ImageTransportSurfaceAndroid.
+  virtual bool InitializeOnMainThread() { return false; }
+  virtual bool BindToCurrentThread() { return false; }
+  virtual WebKit::WebGraphicsContext3D* Context3d() { return NULL; }
+  virtual class GrContext* GrContext() { return NULL; }
+  virtual void VerifyContexts() {}
+ protected:
+  virtual ~NullContextProvider() {}
+};
+
+scoped_refptr<webkit::gpu::ContextProvider>
+CompositorImpl::OffscreenContextProviderForMainThread() {
+  if (!null_offscreen_context_provider_)
+    null_offscreen_context_provider_ = new NullContextProvider();
+  return null_offscreen_context_provider_;
+}
+
+scoped_refptr<webkit::gpu::ContextProvider>
+CompositorImpl::OffscreenContextProviderForCompositorThread() {
+  if (!null_offscreen_context_provider_)
+    null_offscreen_context_provider_ = new NullContextProvider();
+  return null_offscreen_context_provider_;
+}
+
 void CompositorImpl::OnViewContextSwapBuffersPosted() {
   TRACE_EVENT0("compositor", "CompositorImpl::OnViewContextSwapBuffersPosted");
 }