Roll Chrome into Mojo.

cc/resources/pixel_buffer_tile_task_worker_pool.cc

Index: cc/resources/pixel_buffer_tile_task_worker_pool.cc
diff --git a/cc/resources/pixel_buffer_tile_task_worker_pool.cc b/cc/resources/pixel_buffer_tile_task_worker_pool.cc
index 7256f948ead155f4ac4156396ed9292fbc9c76d1..d79577dd549635b6c3b82857f9b1348794f91ff4 100644
--- a/cc/resources/pixel_buffer_tile_task_worker_pool.cc
+++ b/cc/resources/pixel_buffer_tile_task_worker_pool.cc
@@ -7,9 +7,9 @@
 #include <algorithm>
 
 #include "base/containers/stack_container.h"
-#include "base/debug/trace_event.h"
-#include "base/debug/trace_event_argument.h"
 #include "base/strings/stringprintf.h"
+#include "base/trace_event/trace_event.h"
+#include "base/trace_event/trace_event_argument.h"
 #include "cc/debug/traced_value.h"
 #include "cc/resources/raster_buffer.h"
 #include "cc/resources/resource.h"
@@ -307,6 +307,10 @@ void PixelBufferTileTaskWorkerPool::CheckForCompletedTasks() {
   completed_raster_tasks_.clear();
 }
 
+ResourceFormat PixelBufferTileTaskWorkerPool::GetResourceFormat() {
+  return resource_provider_->memory_efficient_texture_format();
+}
+
 scoped_ptr<RasterBuffer> PixelBufferTileTaskWorkerPool::AcquireBufferForRaster(
     const Resource* resource) {
   return make_scoped_ptr<RasterBuffer>(