message: Replace casted uses of [OCMArg anyPointer] with [OCMArg anyObjectRef].
  Cr-Commit-Position: refs/heads/master@{#33212}
diff: @@ -253,9 +253,10 @@ OCMLocation *OCMMakeLocation(id testCase, const char *fileCString, int line){
  };
  id mockAVAudioSession = OCMPartialMock([AVAudioSession sharedInstance]);
  - OCMStub([[mockAVAudioSession ignoringNonObjectArgs]
  - setActive:YES withOptions:0 error:((NSError __autoreleasing **)[OCMArg anyPointer])]).
  - andDo(setActiveBlock);
  + OCMStub([[mockAVAudioSession ignoringNonObjectArgs] setActive:YES
  + withOptions:0
  + error:([OCMArg anyObjectRef])])
  + .andDo(setActiveBlock);
  id mockAudioSession = OCMPartialMock([RTC_OBJC_TYPE(RTCAudioSession) sharedInstance]);
  OCMStub([mockAudioSession session]).andReturn(mockAVAudioSession);
  @@ -266,9 +267,10 @@ OCMLocation *OCMMakeLocation(id testCase, const char *fileCString, int line){
  EXPECT_TRUE([audioSession checkLock:nil]);
  // configureWebRTCSession is forced to fail in the above mock interface,
  // so activationCount should remain 0
  - OCMExpect([[mockAVAudioSession ignoringNonObjectArgs]
  - setActive:YES withOptions:0 error:((NSError __autoreleasing **)[OCMArg anyPointer])]).
  - andDo(setActiveBlock);
  + OCMExpect([[mockAVAudioSession ignoringNonObjectArgs] setActive:YES
  + withOptions:0
  + error:([OCMArg anyObjectRef])])
  + .andDo(setActiveBlock);
  OCMExpect([mockAudioSession session]).andReturn(mockAVAudioSession);
  EXPECT_FALSE([audioSession configureWebRTCSession:&error]);
  EXPECT_EQ(0, audioSession.activationCount);
  