RTC_[D]CHECK_op: Remove "u" suffix on integer constants

webrtc/modules/audio_processing/audio_buffer.cc

Index: webrtc/modules/audio_processing/audio_buffer.cc
diff --git a/webrtc/modules/audio_processing/audio_buffer.cc b/webrtc/modules/audio_processing/audio_buffer.cc
index f5b9016a675759824e840ff52167068a388f965c..02b8537c07857cc8085ec6cd1707fc2c69885624 100644
--- a/webrtc/modules/audio_processing/audio_buffer.cc
+++ b/webrtc/modules/audio_processing/audio_buffer.cc
@@ -62,11 +62,11 @@ AudioBuffer::AudioBuffer(size_t input_num_frames,
     activity_(AudioFrame::kVadUnknown),
     keyboard_data_(NULL),
     data_(new IFChannelBuffer(proc_num_frames_, num_proc_channels_)) {
-  RTC_DCHECK_GT(input_num_frames_, 0u);
-  RTC_DCHECK_GT(proc_num_frames_, 0u);
-  RTC_DCHECK_GT(output_num_frames_, 0u);
-  RTC_DCHECK_GT(num_input_channels_, 0u);
-  RTC_DCHECK_GT(num_proc_channels_, 0u);
+  RTC_DCHECK_GT(input_num_frames_, 0);
+  RTC_DCHECK_GT(proc_num_frames_, 0);
+  RTC_DCHECK_GT(output_num_frames_, 0);
+  RTC_DCHECK_GT(num_input_channels_, 0);
+  RTC_DCHECK_GT(num_proc_channels_, 0);
   RTC_DCHECK_LE(num_proc_channels_, num_input_channels_);
 
   if (input_num_frames_ != proc_num_frames_ ||