Add a workaround to compare types in mocked method

third_party/ocmock/ocmock.gyp

 # Copyright (c) 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.
 
 {
   'targets': [
   ],
   'conditions': [
     ['OS=="mac" or OS=="ios"', {
       'targets' : [
@@ skipping 24 matching lines @@
             'OCMock/NSMethodSignature+OCMAdditions.m',
             'OCMock/NSNotificationCenter+OCMAdditions.h',
             'OCMock/NSNotificationCenter+OCMAdditions.m',
             'OCMock/OCClassMockObject.h',
             'OCMock/OCClassMockObject.m',
             'OCMock/OCMArg.h',
             'OCMock/OCMArg.m',
             'OCMock/OCMBlockCaller.h',
             'OCMock/OCMBlockCaller.m',
             'OCMock/OCMBoxedReturnValueProvider.h',
-            'OCMock/OCMBoxedReturnValueProvider.m',
+            'OCMock/OCMBoxedReturnValueProvider.mm',
             'OCMock/OCMConstraint.h',
             'OCMock/OCMConstraint.m',
             'OCMock/OCMExceptionReturnValueProvider.h',
             'OCMock/OCMExceptionReturnValueProvider.m',
             'OCMock/OCMIndirectReturnValueProvider.h',
             'OCMock/OCMIndirectReturnValueProvider.m',
             'OCMock/OCMNotificationPoster.h',
             'OCMock/OCMNotificationPoster.m',
             'OCMock/OCMObserverRecorder.h',
             'OCMock/OCMPassByRefSetter.h',
@@ skipping 14 matching lines @@
             'OCMock/OCMockRecorder.h',
             'OCMock/OCMockRecorder.m',
             'OCMock/OCObserverMockObject.h',
             'OCMock/OCObserverMockObject.m',
           ],
         },
       ],
     }],
   ],
 }