cc, gpu: Use RGBA when using msaa on systems that don't support BGRA

cc/raster/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/raster/pixel_buffer_tile_task_worker_pool.h"
 
 #include <algorithm>
 
 #include "base/containers/stack_container.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/raster/raster_buffer.h"
+#include "cc/resources/platform_color.h"
 #include "cc/resources/resource.h"
 #include "gpu/command_buffer/client/gles2_interface.h"
 
 namespace cc {
 namespace {
 
 class RasterBufferImpl : public RasterBuffer {
  public:
   RasterBufferImpl(ResourceProvider* resource_provider,
                    const Resource* resource)
@@ skipping 280 matching lines @@
     DCHECK_EQ(RasterTaskState::COMPLETED, state_it->type);
 
     std::swap(*state_it, raster_task_states_.back());
     raster_task_states_.pop_back();
 
     task->RunReplyOnOriginThread();
   }
   completed_raster_tasks_.clear();
 }
 
-ResourceFormat PixelBufferTileTaskWorkerPool::GetResourceFormat() {
+ResourceFormat PixelBufferTileTaskWorkerPool::GetResourceFormat() const {
   return resource_provider_->memory_efficient_texture_format();
 }
 
+bool PixelBufferTileTaskWorkerPool::GetResourceRequiresSwizzle() const {
+  return !PlatformColor::SameComponentOrder(GetResourceFormat());
+}
+
 scoped_ptr<RasterBuffer> PixelBufferTileTaskWorkerPool::AcquireBufferForRaster(
     const Resource* resource,
     uint64_t resource_content_id,
     uint64_t previous_content_id) {
   return make_scoped_ptr<RasterBuffer>(
       new RasterBufferImpl(resource_provider_, resource));
 }
 
 void PixelBufferTileTaskWorkerPool::ReleaseBufferForRaster(
     scoped_ptr<RasterBuffer> buffer) {
@@ skipping 411 matching lines @@
   throttle_state->SetInteger(
       "bytes_available_for_upload",
       static_cast<int>(max_bytes_pending_upload_ - bytes_pending_upload_));
   throttle_state->SetInteger("bytes_pending_upload",
                              static_cast<int>(bytes_pending_upload_));
   throttle_state->SetInteger("scheduled_raster_task_count",
                              static_cast<int>(scheduled_raster_task_count_));
 }
 
 }  // namespace cc