Consider occluded tiles during eviction with occluded as Tile property.

cc/resources/tile_priority.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/tile_priority.h"
 
 #include "base/values.h"
 #include "cc/base/math_util.h"
 
 namespace cc {
@@ skipping 76 matching lines @@
   switch (prio) {
   case SAME_PRIORITY_FOR_BOTH_TREES:
       return scoped_ptr<base::Value>(new base::StringValue(
           "SAME_PRIORITY_FOR_BOTH_TREES"));
   case SMOOTHNESS_TAKES_PRIORITY:
       return scoped_ptr<base::Value>(new base::StringValue(
           "SMOOTHNESS_TAKES_PRIORITY"));
   case NEW_CONTENT_TAKES_PRIORITY:
       return scoped_ptr<base::Value>(new base::StringValue(
           "NEW_CONTENT_TAKES_PRIORITY"));
+  default:
+    DCHECK(false) << "Unrecognized priority value " << prio;
+    return scoped_ptr<base::Value>(new base::StringValue("<unknown>"));
   }
-  DCHECK(false) << "Unrecognized priority value " << prio;
-  return scoped_ptr<base::Value>(new base::StringValue(
-      "<unknown>"));
 }
 
 scoped_ptr<base::Value> GlobalStateThatImpactsTilePriority::AsValue() const {
   scoped_ptr<base::DictionaryValue> state(new base::DictionaryValue());
   state->Set("memory_limit_policy",
              TileMemoryLimitPolicyAsValue(memory_limit_policy).release());
   state->SetInteger("soft_memory_limit_in_bytes", soft_memory_limit_in_bytes);
   state->SetInteger("hard_memory_limit_in_bytes", hard_memory_limit_in_bytes);
   state->SetInteger("num_resources_limit", num_resources_limit);
   state->Set("tree_priority", TreePriorityAsValue(tree_priority).release());
   return state.PassAs<base::Value>();
 }
 
 }  // namespace cc