Add a flag to disable partial raster in renderer

cc/tiles/picture_layer_tiling.cc

Index: cc/tiles/picture_layer_tiling.cc
diff --git a/cc/tiles/picture_layer_tiling.cc b/cc/tiles/picture_layer_tiling.cc
index be8a7940f7048522a7e13e928e3b50a4f71c513c..d76c2d167bbae5925915777d35cd4ce8090296d7 100644
--- a/cc/tiles/picture_layer_tiling.cc
+++ b/cc/tiles/picture_layer_tiling.cc
@@ -141,7 +141,8 @@ void PictureLayerTiling::CreateMissingTilesInLiveTilesRect() {
       // If this is the pending tree, then the active twin tiling may contain
       // the previous content ID of these tiles. In that case, we need only
       // partially raster the tile content.
-      if (tile && invalidation && TilingMatchesTileIndices(active_twin)) {
+      if (client_->IsPartialRasterEnabled() && tile && invalidation &&

[danakj, 2015/10/08 15:18:43]

can you move this virtual call outside of the loop?

[ericrk, 2015/10/13 23:03:45]

this code has been removed.

+          TilingMatchesTileIndices(active_twin)) {
         if (const Tile* old_tile =
                 active_twin->TileAt(key.index_x, key.index_y)) {
           gfx::Rect tile_rect = tile->content_rect();
@@ -338,7 +339,8 @@ void PictureLayerTiling::RemoveTilesInRegion(const Region& layer_invalidation,
     ScopedTilePtr old_tile = TakeTileAt(key.index_x, key.index_y);
     if (recreate_tiles && old_tile) {
       Tile::CreateInfo info = CreateInfoForTile(key.index_x, key.index_y);
-      if (Tile* tile = CreateTile(info))
+      Tile* tile = CreateTile(info);
+      if (client_->IsPartialRasterEnabled() && tile)

[danakj, 2015/10/08 15:18:43]

ditto

[ericrk, 2015/10/13 23:03:45]

this code has been removed.

         tile->SetInvalidated(invalid_content_rect, old_tile->id());
     }
   }