Add hints for potential overlay promotion on android.

cc/resources/transferable_resource.cc

 // Copyright 2012 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/resources/returned_resource.h"
 #include "cc/resources/transferable_resource.h"
 
 namespace cc {
 
 TransferableResource::TransferableResource()
     : id(0),
       format(RGBA_8888),
       filter(0),
       read_lock_fences_enabled(false),
       is_software(false),
-      is_overlay_candidate(false) {}
+#if defined(OS_ANDROID)
+      is_backed_by_surface_texture(false),
+      wants_promotion_hint(false),
+#endif
+      is_overlay_candidate(false) {
+}
 
 TransferableResource::TransferableResource(const TransferableResource& other) =
     default;
 
 TransferableResource::~TransferableResource() {
 }
 
 ReturnedResource TransferableResource::ToReturnedResource() const {
   ReturnedResource returned;
   returned.id = id;
   returned.sync_token = mailbox_holder.sync_token;
   returned.count = 1;
   return returned;
 }
 
 // static
 void TransferableResource::ReturnResources(
     const TransferableResourceArray& input,
     ReturnedResourceArray* output) {
   for (TransferableResourceArray::const_iterator it = input.begin();
        it != input.end(); ++it)
     output->push_back(it->ToReturnedResource());
 }
 
 }  // namespace cc