cc: Added tile bundles

This patch adds TileBundles to cc. Currently, in impl
side painting we work with Tiles. A PictureLayerTiling
creates enough tiles to cover its rect (and registers
them with the tile manager), then it updates the
priorities of each of the tile, and finally informs
TileManager to do its work. TileManager sorts and assigns
memory to tiles, and begins rasterization.

With TileBundles, the tiling creates TileBundles (initially
2x2 tiles) to contain tiles. Update tile priorities now
only happens on a per bundle basis. In the initial patch,
TileManager still pulls out each individual tile for
processing.

**** Note to Perf Sheriffs ****
This patch affects performance of several of cc_perftests:
- PictureLayerTilingPerfTest.Invalidate
   This test is expected to regress slightly, but not
   too much.
- PictureLayerTilingPerfTest.UpdateTilePriorities
   This test's performance should improve greatly.
- TileManagerPerfTest.ManageTiles
   This test _should_ remain roughly the same, but there
   might be some up or down as the result of the patch.

Review URL: https://codereview.chromium.org/62283012

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@239074 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 9 insertions, 5 deletions

diff --git a/cc/test/fake_picture_layer_tiling_client.h b/cc/test/fake_picture_layer_tiling_client.h
index 4b092e8..bd4f443 100644
--- a/cc/test/fake_picture_layer_tiling_client.h
+++ b/cc/test/fake_picture_layer_tiling_client.h
@@ -16,13 +16,16 @@ namespace cc {
 
 class FakePictureLayerTilingClient : public PictureLayerTilingClient {
  public:
-  FakePictureLayerTilingClient();
-  explicit FakePictureLayerTilingClient(ResourceProvider* resource_provider);
+  explicit FakePictureLayerTilingClient(TileManager* tile_manager);
   virtual ~FakePictureLayerTilingClient();
 
   // PictureLayerTilingClient implementation.
   virtual scoped_refptr<Tile> CreateTile(
       PictureLayerTiling* tiling, gfx::Rect rect) OVERRIDE;
+  virtual scoped_refptr<TileBundle> CreateTileBundle(int offset_x,
+                                                     int offset_y,
+                                                     int width,
+                                                     int height) OVERRIDE;
   virtual void UpdatePile(Tile* tile) OVERRIDE {}
   virtual gfx::Size CalculateTileSize(
       gfx::Size content_bounds) const OVERRIDE;
@@ -42,18 +45,19 @@ class FakePictureLayerTilingClient : public PictureLayerTilingClient {
   void set_invalidation(const Region& region) { invalidation_ = region; }
 
   TileManager* tile_manager() const {
-    return tile_manager_.get();
+    return tile_manager_;
   }
 
  protected:
-  FakeTileManagerClient tile_manager_client_;
-  scoped_ptr<TileManager> tile_manager_;
+  TileManager* tile_manager_;
   scoped_refptr<PicturePileImpl> pile_;
   gfx::Size tile_size_;
   PictureLayerTiling* twin_tiling_;
   gfx::Rect text_rect_;
   bool allow_create_tile_;
   Region invalidation_;
+  bool is_active_;
+  bool is_pending_;
 };
 
 }  // namespace cc