cc: Adding support for RGBA_4444 tile textures

cc/resources/pixel_buffer_raster_worker_pool.cc

Index: cc/resources/pixel_buffer_raster_worker_pool.cc
diff --git a/cc/resources/pixel_buffer_raster_worker_pool.cc b/cc/resources/pixel_buffer_raster_worker_pool.cc
index 48e6f9a114b58e34743c5396e66b16b91602a081..4dbc4ebfe8489a9fd7e18715416e72df18cc284e 100644
--- a/cc/resources/pixel_buffer_raster_worker_pool.cc
+++ b/cc/resources/pixel_buffer_raster_worker_pool.cc
@@ -41,13 +41,10 @@ class PixelBufferWorkerPoolTaskImpl : public internal::WorkerPoolTask {
       needs_upload_ = true;
       return;
     }
-    SkBitmap bitmap;
-    bitmap.setConfig(SkBitmap::kARGB_8888_Config,
-                     task_->resource()->size().width(),
-                     task_->resource()->size().height());
-    bitmap.setPixels(buffer_);
-    SkBitmapDevice device(bitmap);
-    needs_upload_ = task_->RunOnWorkerThread(&device, thread_index);
+    needs_upload_ = task_->RunOnWorkerThread(thread_index,
+                                             buffer_,
+                                             task_->resource()->size(),
+                                             0);
   }
   virtual void CompleteOnOriginThread() OVERRIDE {
     // |needs_upload_| must be be false if task didn't run.
@@ -95,7 +92,8 @@ bool WasCanceled(const internal::RasterWorkerPoolTask* task) {
 PixelBufferRasterWorkerPool::PixelBufferRasterWorkerPool(
     ResourceProvider* resource_provider,
     size_t num_threads,
-    size_t max_transfer_buffer_usage_bytes)
+    size_t max_transfer_buffer_usage_bytes,
+    ResourceProvider::Format format)
     : RasterWorkerPool(resource_provider, num_threads),
       shutdown_(false),
       scheduled_raster_task_count_(0),
@@ -105,7 +103,8 @@ PixelBufferRasterWorkerPool::PixelBufferRasterWorkerPool(
       check_for_completed_raster_tasks_pending_(false),
       should_notify_client_if_no_tasks_are_pending_(false),
       should_notify_client_if_no_tasks_required_for_activation_are_pending_(
-          false) {
+          false),
+      format_(format) {
 }
 
 PixelBufferRasterWorkerPool::~PixelBufferRasterWorkerPool() {
@@ -226,8 +225,9 @@ void PixelBufferRasterWorkerPool::ScheduleTasks(RasterTask::Queue* queue) {
       "state", TracedValue::FromValue(StateAsValue().release()));
 }
 
-GLenum PixelBufferRasterWorkerPool::GetResourceFormat() const {
-  return resource_provider()->best_texture_format();
+ResourceProvider::Format
+    PixelBufferRasterWorkerPool::GetResourceFormat() const {
+  return format_;
 }
 
 void PixelBufferRasterWorkerPool::CheckForCompletedTasks() {