cc: Make tiling interest rect calc based on viewport.

cc/resources/picture_layer_tiling_set_unittest.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/picture_layer_tiling_set.h"
 
 #include <map>
 #include <vector>
 
 #include "cc/resources/resource_provider.h"
 #include "cc/test/fake_output_surface.h"
 #include "cc/test/fake_output_surface_client.h"
 #include "cc/test/fake_picture_layer_tiling_client.h"
 #include "cc/test/fake_picture_pile_impl.h"
 #include "cc/test/test_shared_bitmap_manager.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/gfx/geometry/size_conversions.h"
 
 namespace cc {
 namespace {
 
 scoped_ptr<PictureLayerTilingSet> CreateTilingSet(
     PictureLayerTilingClient* client) {
   LayerTreeSettings defaults;
   return PictureLayerTilingSet::Create(
-      ACTIVE_TREE, client, defaults.max_tiles_for_interest_area,
+      ACTIVE_TREE, client, defaults.tiling_interest_area_viewport_multiplier,
       defaults.skewport_target_time_in_seconds,
       defaults.skewport_extrapolation_limit_in_content_pixels);
 }
 
 TEST(PictureLayerTilingSetTest, NoResources) {
   FakePictureLayerTilingClient client;
   gfx::Size layer_bounds(1000, 800);
   scoped_ptr<PictureLayerTilingSet> set = CreateTilingSet(&client);
   client.SetTileSize(gfx::Size(256, 256));
 
@@ skipping 408 matching lines @@
 
   // Clone from the pending to the active tree with the same max content size.
   active_set->UpdateTilingsToCurrentRasterSourceForActivation(
       pile.get(), pending_set.get(), Region(), 1.f, max_content_scale);
   // All the tilings are on the active tree.
   EXPECT_EQ(2u, active_set->num_tilings());
 }
 
 }  // namespace
 }  // namespace cc