gpu: Implement idle async pixel transfers.

ui/gl/async_pixel_transfer_delegate_stub.cc

Index: ui/gl/async_pixel_transfer_delegate_stub.cc
diff --git a/ui/gl/async_pixel_transfer_delegate_stub.cc b/ui/gl/async_pixel_transfer_delegate_stub.cc
index 2ec16bbcff4adaae952960a31151301053a852ed..e3835a2a378929fba4bc9bccdf47bf94f3fc1a15 100644
--- a/ui/gl/async_pixel_transfer_delegate_stub.cc
+++ b/ui/gl/async_pixel_transfer_delegate_stub.cc
@@ -18,7 +18,7 @@ void* GetAddress(SharedMemory* shared_memory,
                  uint32 shm_data_offset,
                  uint32 shm_data_size) {
   // Memory bounds have already been validated, so there
-  // is just DCHECKS here.
+  // are just DCHECKS here.
   DCHECK(shared_memory);
   DCHECK(shared_memory->memory());
   DCHECK_LE(shm_data_offset + shm_data_size, shm_size);
@@ -28,13 +28,6 @@ void* GetAddress(SharedMemory* shared_memory,
 
 namespace gfx {
 
-#if !defined(OS_ANDROID)
-scoped_ptr<AsyncPixelTransferDelegate>
-    AsyncPixelTransferDelegate::Create(gfx::GLContext* context) {
-  return AsyncPixelTransferDelegateStub::Create(context);
-}
-#endif
-
 scoped_ptr<AsyncPixelTransferDelegate>
       AsyncPixelTransferDelegateStub::Create(gfx::GLContext* context) {
   return make_scoped_ptr(
@@ -63,8 +56,7 @@ AsyncPixelTransferState*
     AsyncPixelTransferDelegateStub::CreateRawPixelTransferState(
         GLuint texture_id,
         const AsyncTexImage2DParams& define_params) {
-  return static_cast<AsyncPixelTransferState*>(
-      new AsyncTransferStateStub(texture_id));
+  return new AsyncTransferStateStub(texture_id);
 }
 
 bool AsyncPixelTransferDelegateStub::BindCompletedAsyncTransfers() {
@@ -141,5 +133,13 @@ base::TimeDelta AsyncPixelTransferDelegateStub::GetTotalTextureUploadTime() {
   return total_texture_upload_time_;
 }
 
+bool AsyncPixelTransferDelegateStub::ProcessMorePendingTransfers() {
+  return false;
+}
+
+bool AsyncPixelTransferDelegateStub::NeedsProcessMorePendingTransfers() {
+  return false;
+}
+
 }  // namespace gfx