Match existing type usage better.

talk/app/webrtc/test/fakeaudiocapturemodule_unittest.cc

 /*
  * libjingle
  * Copyright 2012 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 48 matching lines @@
                                           const uint32_t nSamples,
                                           const uint8_t nBytesPerSample,
                                           const uint8_t nChannels,
                                           const uint32_t samplesPerSec,
                                           const uint32_t totalDelayMS,
                                           const int32_t clockDrift,
                                           const uint32_t currentMicLevel,
                                           const bool keyPressed,
                                           uint32_t& newMicLevel) {
     rec_buffer_bytes_ = nSamples * nBytesPerSample;
-    if ((rec_buffer_bytes_ <= 0) ||
+    if ((rec_buffer_bytes_ == 0) ||
         (rec_buffer_bytes_ > FakeAudioCaptureModule::kNumberSamples *
          FakeAudioCaptureModule::kNumberBytesPerSample)) {
       ADD_FAILURE();
       return -1;
     }
     memcpy(rec_buffer_, audioSamples, rec_buffer_bytes_);
     ++push_iterations_;
     newMicLevel = currentMicLevel;
     return 0;
   }
@@ skipping 117 matching lines @@
 
   EXPECT_EQ(0, fake_audio_capture_module_->InitRecording());
   EXPECT_EQ(0, fake_audio_capture_module_->StartRecording());
 
   EXPECT_TRUE_WAIT(push_iterations() > 0, kMsInSecond);
   EXPECT_TRUE_WAIT(pull_iterations() > 0, kMsInSecond);
 
   EXPECT_EQ(0, fake_audio_capture_module_->StopPlayout());
   EXPECT_EQ(0, fake_audio_capture_module_->StopRecording());
 }