cc: Adding support for RGBA_4444 tile textures

cc/resources/tile_manager.cc

 // Copyright 2012 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/tile_manager.h"
 
 #include <algorithm>
 #include <limits>
 #include <string>
 
@@ skipping 107 matching lines @@
   return state.PassAs<base::Value>();
 }
 
 // static
 scoped_ptr<TileManager> TileManager::Create(
     TileManagerClient* client,
     ResourceProvider* resource_provider,
     size_t num_raster_threads,
     RenderingStatsInstrumentation* rendering_stats_instrumentation,
     bool use_map_image,
-    size_t max_transfer_buffer_usage_bytes) {
+    size_t max_transfer_buffer_usage_bytes,
+    bool use_rgba_4444_tiles) {

[reveman, 2013/09/14 00:58:39]

can the use_rgba_4444_tiles setting be passed to the ResourceProvider ctor
instead so that best_tile_texture_format() doesn't take a parameter?

[kaanb, 2013/09/16 07:22:25]

Done.

   return make_scoped_ptr(
       new TileManager(client,
                       resource_provider,
                       use_map_image ?
                       ImageRasterWorkerPool::Create(
                           resource_provider, num_raster_threads) :
                       PixelBufferRasterWorkerPool::Create(
                           resource_provider,
                           num_raster_threads,
-                          max_transfer_buffer_usage_bytes),
+                          max_transfer_buffer_usage_bytes,
+                          resource_provider->best_tile_texture_format(
+                              use_rgba_4444_tiles)),
                       num_raster_threads,
                       rendering_stats_instrumentation));
 }
 
 TileManager::TileManager(
     TileManagerClient* client,
     ResourceProvider* resource_provider,
     scoped_ptr<RasterWorkerPool> raster_worker_pool,
     size_t num_raster_threads,
     RenderingStatsInstrumentation* rendering_stats_instrumentation)
@@ skipping 681 matching lines @@
     bytes_releasable_ += tile->bytes_consumed_if_allocated();
     ++resources_releasable_;
   }
 
   FreeUnusedResourcesForTile(tile);
   if (tile->priority(ACTIVE_TREE).distance_to_visible_in_pixels == 0)
     did_initialize_visible_tile_ = true;
 }
 
 }  // namespace cc