cc: Make tiling interest rect calc based on viewport.

cc/resources/tile_manager_unittest.cc

Index: cc/resources/tile_manager_unittest.cc
diff --git a/cc/resources/tile_manager_unittest.cc b/cc/resources/tile_manager_unittest.cc
index acd3a740bb3c84cb67966762fc6231b77b643739..6545ba436a58ed93474af8addd5e507822eb983f 100644
--- a/cc/resources/tile_manager_unittest.cc
+++ b/cc/resources/tile_manager_unittest.cc
@@ -775,8 +775,8 @@ TEST_F(TileManagerTilePriorityQueueTest, EvictionTilePriorityQueue) {
   }
 
   // Ensure that the distance is decreasing many more times than increasing.
-  EXPECT_EQ(3, distance_increasing);
-  EXPECT_EQ(17, distance_decreasing);
+  EXPECT_EQ(0, distance_increasing);
+  EXPECT_EQ(8, distance_decreasing);
   EXPECT_EQ(tile_count, smoothness_tiles.size());
   EXPECT_EQ(all_tiles, smoothness_tiles);
 
@@ -815,8 +815,8 @@ TEST_F(TileManagerTilePriorityQueueTest, EvictionTilePriorityQueue) {
   }
 
   // Ensure that the distance is decreasing many more times than increasing.
-  EXPECT_EQ(3, distance_increasing);
-  EXPECT_EQ(17, distance_decreasing);
+  EXPECT_EQ(0, distance_increasing);
+  EXPECT_EQ(8, distance_decreasing);
   EXPECT_EQ(tile_count, new_content_tiles.size());
   EXPECT_EQ(all_tiles, new_content_tiles);
 }
@@ -1176,10 +1176,10 @@ TEST_F(TileManagerTilePriorityQueueTest,
 
   client.SetTileSize(gfx::Size(30, 30));
   LayerTreeSettings settings;
-  settings.max_tiles_for_interest_area = 10000;
+  settings.tiling_interest_area_viewport_multiplier = 10000;
 
   scoped_ptr<PictureLayerTilingSet> tiling_set = PictureLayerTilingSet::Create(
-      ACTIVE_TREE, &client, settings.max_tiles_for_interest_area,
+      ACTIVE_TREE, &client, settings.tiling_interest_area_viewport_multiplier,
       settings.skewport_target_time_in_seconds,
       settings.skewport_extrapolation_limit_in_content_pixels);
 
@@ -1286,10 +1286,10 @@ TEST_F(TileManagerTilePriorityQueueTest,
 
   client.SetTileSize(gfx::Size(30, 30));
   LayerTreeSettings settings;
-  settings.max_tiles_for_interest_area = 10000;
+  settings.tiling_interest_area_viewport_multiplier = 180;
 
   scoped_ptr<PictureLayerTilingSet> tiling_set = PictureLayerTilingSet::Create(
-      ACTIVE_TREE, &client, settings.max_tiles_for_interest_area,
+      ACTIVE_TREE, &client, settings.tiling_interest_area_viewport_multiplier,
       settings.skewport_target_time_in_seconds,
       settings.skewport_extrapolation_limit_in_content_pixels);