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

cc/animation/transform_operation.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 <algorithm>
 #include <cmath>
 #include <limits>
 
 #include "cc/animation/transform_operation.h"
 #include "ui/gfx/box_f.h"
@@ skipping 275 matching lines @@
       } else if (!bounds_max.IsEmpty()) {
         UnionBoxWithZeroScale(&bounds_max);
         *bounds = bounds_max;
       }
 
       return true;
     }
     case TransformOperation::TransformOperationIdentity:
       *bounds = box;
       return true;
-    default:
-      return false;
+    case TransformOperation::TransformOperationRotate:
+    case TransformOperation::TransformOperationSkew:
+    case TransformOperation::TransformOperationPerspective:
+    case TransformOperation::TransformOperationMatrix:
+      break;

[danakj, 2013/08/26 15:55:39]

can you return false here and NOTREACHED() below?

[reveman, 2013/08/26 17:16:57]

Done.

   }
+  return false;
 }
 
 }  // namespace cc