cc: Do the math for a tile's content rect in layer space once.

cc/test/fake_picture_layer_tiling_client.h

 // 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.
 
 #ifndef CC_TEST_FAKE_PICTURE_LAYER_TILING_CLIENT_H_
 #define CC_TEST_FAKE_PICTURE_LAYER_TILING_CLIENT_H_
 
 #include "cc/playback/picture_pile_impl.h"
 #include "cc/test/fake_tile_manager_client.h"
 #include "cc/tiles/picture_layer_tiling.h"
 #include "cc/tiles/tile.h"
 #include "cc/tiles/tile_manager.h"
 #include "ui/gfx/geometry/rect.h"
 
 namespace cc {
 
 class FakePictureLayerTilingClient : public PictureLayerTilingClient {
  public:
   FakePictureLayerTilingClient();
   explicit FakePictureLayerTilingClient(ResourceProvider* resource_provider);
   ~FakePictureLayerTilingClient() override;
 
   // PictureLayerTilingClient implementation.
-  ScopedTilePtr CreateTile(float contents_scale,
-                           const gfx::Rect& rect) override;
+  ScopedTilePtr CreateTile(const Tile::CreateInfo& info) override;
   gfx::Size CalculateTileSize(const gfx::Size& content_bounds) const override;
   bool HasValidTilePriorities() const override;
 
   void SetTileSize(const gfx::Size& tile_size);
   gfx::Size TileSize() const { return tile_size_; }
 
   const Region* GetPendingInvalidation() override;
   const PictureLayerTiling* GetPendingOrActiveTwinTiling(
       const PictureLayerTiling* tiling) const override;
   bool RequiresHighResToDraw() const override;
@@ skipping 26 matching lines @@
   PictureLayerTilingSet* twin_set_;
   PictureLayerTiling* twin_tiling_;
   gfx::Rect text_rect_;
   Region invalidation_;
   bool has_valid_tile_priorities_;
 };
 
 }  // namespace cc
 
 #endif  // CC_TEST_FAKE_PICTURE_LAYER_TILING_CLIENT_H_