gpu: Refactor GpuMemoryBuffer framework for multi-process support.

cc/resources/tile_manager.h

Index: cc/resources/tile_manager.h
diff --git a/cc/resources/tile_manager.h b/cc/resources/tile_manager.h
index 2e226c9999d9c0cbd1f221f1bdc189ea16aaf15d..b223e35ad081dbd40a8d0dcc6e5be5fd09679d76 100644
--- a/cc/resources/tile_manager.h
+++ b/cc/resources/tile_manager.h
@@ -84,8 +84,7 @@ class CC_EXPORT TileManager : public RasterWorkerPoolClient {
               ResourceProvider* resource_provider,
               scoped_ptr<RasterWorkerPool> raster_worker_pool,
               size_t num_raster_threads,
-              RenderingStatsInstrumentation* rendering_stats_instrumentation,
-              GLenum texture_format);
+              RenderingStatsInstrumentation* rendering_stats_instrumentation);
 
   // Methods called by Tile
   friend class Tile;
@@ -154,8 +153,6 @@ class CC_EXPORT TileManager : public RasterWorkerPoolClient {
 
   bool did_initialize_visible_tile_;
 
-  GLenum texture_format_;
-
   typedef base::hash_map<uint32_t, RasterWorkerPool::Task> PixelRefTaskMap;
   typedef base::hash_map<int, PixelRefTaskMap> LayerPixelRefTaskMap;
   LayerPixelRefTaskMap image_decode_tasks_;