cc: Adding support for RGBA_4444 tile textures

cc/resources/image_raster_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/image_raster_worker_pool.h"
 
 #include "base/debug/trace_event.h"
 #include "base/values.h"
 #include "cc/debug/traced_value.h"
 #include "cc/resources/resource.h"
@@ skipping 16 matching lines @@
         stride_(stride),
         reply_(reply) {
   }
 
   // Overridden from internal::WorkerPoolTask:
   virtual void RunOnWorkerThread(unsigned thread_index) OVERRIDE {
     TRACE_EVENT0("cc", "ImageWorkerPoolTaskImpl::RunOnWorkerThread");
     if (!buffer_)
       return;
 
-    SkBitmap bitmap;
-    bitmap.setConfig(SkBitmap::kARGB_8888_Config,
-                     task_->resource()->size().width(),
-                     task_->resource()->size().height(),
-                     stride_);
-    bitmap.setPixels(buffer_);
-    SkBitmapDevice device(bitmap);
-    task_->RunOnWorkerThread(&device, thread_index);
+    task_->RunOnWorkerThread(thread_index,
+                             buffer_,
+                             task_->resource()->size(),
+                             stride_);
   }
   virtual void CompleteOnOriginThread() OVERRIDE {
     reply_.Run(!HasFinishedRunning());
   }
 
  private:
   virtual ~ImageWorkerPoolTaskImpl() {}
 
   scoped_refptr<internal::RasterWorkerPoolTask> task_;
   uint8_t* buffer_;
@@ skipping 94 matching lines @@
 
   set_raster_finished_task(new_raster_finished_task);
   set_raster_required_for_activation_finished_task(
       new_raster_required_for_activation_finished_task);
 
   TRACE_EVENT_ASYNC_STEP1(
       "cc", "ScheduledTasks", this, "rasterizing",
       "state", TracedValue::FromValue(StateAsValue().release()));
 }
 
-GLenum ImageRasterWorkerPool::GetResourceFormat() const {
-  return GL_RGBA;  // Only format supported by CHROMIUM_map_image
+ResourceFormat ImageRasterWorkerPool::GetResourceFormat() const {
+  // Only format supported by CHROMIUM_map_image
+  return RGBA_8888;
 }
 
 void ImageRasterWorkerPool::OnRasterTasksFinished() {
   DCHECK(raster_tasks_pending_);
   raster_tasks_pending_ = false;
   TRACE_EVENT_ASYNC_END0("cc", "ScheduledTasks", this);
   client()->DidFinishRunningTasks();
 }
 
 void ImageRasterWorkerPool::OnRasterTasksRequiredForActivationFinished() {
@@ skipping 50 matching lines @@
   if (is_required_for_activation) {
     raster_required_for_activation_finished_node->add_dependency();
     image_node->add_dependent(raster_required_for_activation_finished_node);
   }
 
   raster_finished_node->add_dependency();
   image_node->add_dependent(raster_finished_node);
 }
 
 }  // namespace cc