cc: Remove unnecessary "default" cases from switch statements.

cc/resources/tile_priority.cc

Index: cc/resources/tile_priority.cc
diff --git a/cc/resources/tile_priority.cc b/cc/resources/tile_priority.cc
index 970ea1d81a5bb8631281eeef2d9804213b5ae8db..eeb87cdcbbc63d1ae89a74a9538961aac6eb74a1 100644
--- a/cc/resources/tile_priority.cc
+++ b/cc/resources/tile_priority.cc
@@ -87,11 +87,10 @@ scoped_ptr<base::Value> TileResolutionAsValue(
   case NON_IDEAL_RESOLUTION:
       return scoped_ptr<base::Value>(base::Value::CreateStringValue(
         "NON_IDEAL_RESOLUTION"));
-  default:
-    DCHECK(false) << "Unrecognized TileResolution value " << resolution;
-    return scoped_ptr<base::Value>(base::Value::CreateStringValue(
-        "<unknown TileResolution value>"));
   }
+  DCHECK(false) << "Unrecognized TileResolution value " << resolution;
+  return scoped_ptr<base::Value>(base::Value::CreateStringValue(
+      "<unknown TileResolution value>"));
 }
 
 scoped_ptr<base::Value> TilePriority::AsValue() const {
@@ -176,11 +175,10 @@ scoped_ptr<base::Value> TreePriorityAsValue(TreePriority prio) {
   case NEW_CONTENT_TAKES_PRIORITY:
       return scoped_ptr<base::Value>(base::Value::CreateStringValue(
           "NEW_CONTENT_TAKES_PRIORITY"));
-  default:
-      DCHECK(false) << "Unrecognized priority value " << prio;
-      return scoped_ptr<base::Value>(base::Value::CreateStringValue(
-          "<unknown>"));
   }
+  DCHECK(false) << "Unrecognized priority value " << prio;
+  return scoped_ptr<base::Value>(base::Value::CreateStringValue(
+      "<unknown>"));
 }
 
 scoped_ptr<base::Value> GlobalStateThatImpactsTilePriority::AsValue() const {