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

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 1214 matching lines @@
   DCHECK(tile_version.raster_task_);
   orphan_raster_tasks_.push_back(tile_version.raster_task_);
   tile_version.raster_task_ = NULL;
 
   if (was_canceled) {
     ++update_visible_tiles_stats_.canceled_count;
     resource_pool_->ReleaseResource(resource.Pass());
     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);
   if (analysis.is_solid_color) {
     tile_version.set_solid_color(analysis.solid_color);
     resource_pool_->ReleaseResource(resource.Pass());
   } else {
     tile_version.set_use_resource();
     tile_version.resource_ = resource.Pass();
 
@@ skipping 281 matching lines @@
                                b_tile->priority(b_pair.second),
                                false /* prioritize low res */);
   }
 
   NOTREACHED();
   // Keep the compiler happy.
   return false;
 }
 
 }  // namespace cc