Rename WEBRTC_VIDEOPROCESSOR_H264_TESTS define to WEBRTC_USE_H264.

webrtc/modules/video_coding/codecs/h264/test/h264_impl_unittest.cc

 /*
  *  Copyright (c) 2017 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.
  */
 
@@ skipping 14 matching lines @@
   VideoCodec codec_settings() override {
     VideoCodec codec_inst;
     codec_inst.codecType = webrtc::kVideoCodecH264;
     // If frame dropping is false, we get a warning that bitrate can't
     // be controlled for RC_QUALITY_MODE; RC_BITRATE_MODE and RC_TIMESTAMP_MODE
     codec_inst.H264()->frameDroppingOn = true;
     return codec_inst;
   }
 };
 
-#ifdef WEBRTC_VIDEOPROCESSOR_H264_TESTS
+#ifdef WEBRTC_USE_H264
 #define MAYBE_EncodeDecode EncodeDecode
 #define MAYBE_DecodedQpEqualsEncodedQp DecodedQpEqualsEncodedQp
 #else
 #define MAYBE_EncodeDecode DISABLED_EncodeDecode
 #define MAYBE_DecodedQpEqualsEncodedQp DISABLED_DecodedQpEqualsEncodedQp
 #endif
 
 TEST_F(TestH264Impl, MAYBE_EncodeDecode) {
   EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
             encoder_->Encode(*input_frame_, nullptr, nullptr));
@@ skipping 23 matching lines @@
             decoder_->Decode(encoded_frame, false, nullptr));
   std::unique_ptr<VideoFrame> decoded_frame;
   rtc::Optional<uint8_t> decoded_qp;
   ASSERT_TRUE(WaitForDecodedFrame(&decoded_frame, &decoded_qp));
   ASSERT_TRUE(decoded_frame);
   ASSERT_TRUE(decoded_qp);
   EXPECT_EQ(encoded_frame.qp_, *decoded_qp);
 }
 
 }  // namespace webrtc