cc: Add support for partial swaps when using impl-side painting.

cc/resources/tile_manager.cc

Index: cc/resources/tile_manager.cc
diff --git a/cc/resources/tile_manager.cc b/cc/resources/tile_manager.cc
index 809301fc5fcd92a056cc92cc82534caf1c71084b..ab67611dbabb220327fa128d1f308fabfac33dee 100644
--- a/cc/resources/tile_manager.cc
+++ b/cc/resources/tile_manager.cc
@@ -1232,6 +1232,8 @@ void TileManager::OnRasterTaskCompleted(
     return;
   }
 
+  client_->NotifyInitializedTiles(tile);

[reveman, 2014/04/14 20:03:07]

I think it makes more sense to call this below when all properties have been
updated to reflect that the tile has actually been initialized.

[sohanjg, 2014/04/15 10:03:48]

Done.

+
   ++update_visible_tiles_stats_.completed_count;
 
   tile_version.set_has_text(analysis.has_text);