CC/GPU: Add a soft limit to the compositor.

cc/resources/tile_manager_perftest.cc

 // Copyright 2013 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 "base/time/time.h"
 #include "cc/resources/tile.h"
 #include "cc/resources/tile_priority.h"
 #include "cc/test/fake_output_surface.h"
 #include "cc/test/fake_output_surface_client.h"
 #include "cc/test/fake_picture_pile_impl.h"
@@ skipping 34 matching lines @@
     tile_manager_ =
         make_scoped_ptr(new FakeTileManager(&tile_manager_client_,
                                             resource_provider_.get(),
                                             raster_task_limit_bytes));
     picture_pile_ = FakePicturePileImpl::CreatePile();
   }
 
   GlobalStateThatImpactsTilePriority GlobalStateForTest() {
     GlobalStateThatImpactsTilePriority state;
     gfx::Size tile_size = settings_.default_tile_size;
-    state.memory_limit_in_bytes =
+    state.soft_memory_limit_in_bytes =
         10000u * 4u *
         static_cast<size_t>(tile_size.width() * tile_size.height());
+    state.hard_memory_limit_in_bytes = state.soft_memory_limit_in_bytes;
     state.num_resources_limit = 10000;
     state.memory_limit_policy = ALLOW_ANYTHING;
     state.tree_priority = SMOOTHNESS_TAKES_PRIORITY;
     return state;
   }
 
   virtual void TearDown() OVERRIDE {
     tile_manager_.reset(NULL);
     picture_pile_ = NULL;
   }
@@ skipping 113 matching lines @@
   RunManageTilesTest("1000_10", 1000, 10);
   RunManageTilesTest("10000_10", 10000, 10);
   RunManageTilesTest("100_100", 100, 100);
   RunManageTilesTest("1000_100", 1000, 100);
   RunManageTilesTest("10000_100", 10000, 100);
 }
 
 }  // namespace
 
 }  // namespace cc