Remove the default format from ResourcePool.

cc/resources/pixel_buffer_tile_task_worker_pool.cc

 // 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/resources/pixel_buffer_tile_task_worker_pool.h"
 
 #include <algorithm>
 
 #include "base/containers/stack_container.h"
 #include "base/debug/trace_event.h"
@@ skipping 129 matching lines @@
   DCHECK_EQ(0u, raster_tasks_with_pending_upload_.size());
   DCHECK_EQ(0u, completed_raster_tasks_.size());
   DCHECK_EQ(0u, completed_image_decode_tasks_.size());
   DCHECK(NonEmptyTaskSetsFromTaskCounts(task_counts_).none());
 }
 
 TileTaskRunner* PixelBufferTileTaskWorkerPool::AsTileTaskRunner() {
   return this;
 }
 
+ResourceFormat PixelBufferTileTaskWorkerPool::GetResourceFormat() {
+  return resource_provider_->memory_efficient_texture_format();
+}
+
 void PixelBufferTileTaskWorkerPool::SetClient(TileTaskRunnerClient* client) {
   client_ = client;
 }
 
 void PixelBufferTileTaskWorkerPool::Shutdown() {
   TRACE_EVENT0("cc", "PixelBufferTileTaskWorkerPool::Shutdown");
 
   shutdown_ = true;
 
   TaskGraph empty;
@@ skipping 557 matching lines @@
 void PixelBufferTileTaskWorkerPool::ThrottleStateAsValueInto(
     base::debug::TracedValue* throttle_state) const {
   throttle_state->SetInteger("bytes_available_for_upload",
                              max_bytes_pending_upload_ - bytes_pending_upload_);
   throttle_state->SetInteger("bytes_pending_upload", bytes_pending_upload_);
   throttle_state->SetInteger("scheduled_raster_task_count",
                              scheduled_raster_task_count_);
 }
 
 }  // namespace cc