Ensures that modules_unittests runs on iOS

webrtc/modules/video_processing/main/test/unit_test/brightness_detection_test.cc

 /*
  *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #include "webrtc/common_video/libyuv/include/webrtc_libyuv.h"
 #include "webrtc/modules/video_processing/main/interface/video_processing.h"
 #include "webrtc/modules/video_processing/main/test/unit_test/video_processing_unittest.h"
+#include "webrtc/test/testsupport/gtest_disable.h"
 
 using namespace webrtc;
 
-TEST_F(VideoProcessingModuleTest, BrightnessDetection)
+TEST_F(VideoProcessingModuleTest, DISABLED_ON_IOS(BrightnessDetection))
 {
     uint32_t frameNum = 0;
     int32_t brightnessWarning = 0;
     uint32_t warningCount = 0;
     rtc::scoped_ptr<uint8_t[]> video_buffer(new uint8_t[frame_length_]);
     while (fread(video_buffer.get(), 1, frame_length_, source_file_) ==
            frame_length_)
     {
       EXPECT_EQ(0, ConvertToI420(kI420, video_buffer.get(), 0, 0, width_,
                                  height_, 0, kVideoRotation_0, &video_frame_));
@@ skipping 83 matching lines @@
             warningCount++;
         }
     }
     ASSERT_NE(0, feof(source_file_)) << "Error reading source file";
 
     // Expect many darkness warnings
     warningProportion = static_cast<float>(warningCount) / frameNum * 100;
     printf("Dark foreman: %.1f %%\n\n", warningProportion);
     EXPECT_GT(warningProportion, 90);
 }