Update a ton of audio code to use size_t more correctly and in general reduce

webrtc/modules/audio_device/android/audio_manager_unittest.cc

 /*
  *  Copyright (c) 2015 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 92 matching lines @@
 }
 
 // Basic test of the AudioParameters class using default construction where
 // all members are set to zero.
 TEST_F(AudioManagerTest, AudioParametersWithDefaultConstruction) {
   AudioParameters params;
   EXPECT_FALSE(params.is_valid());
   EXPECT_EQ(0, params.sample_rate());
   EXPECT_EQ(0, params.channels());
   EXPECT_EQ(0, params.frames_per_buffer());
-  EXPECT_EQ(0, params.frames_per_10ms_buffer());
+  EXPECT_EQ(0U, params.frames_per_10ms_buffer());
   EXPECT_EQ(0, params.GetBytesPerFrame());
   EXPECT_EQ(0, params.GetBytesPerBuffer());
-  EXPECT_EQ(0, params.GetBytesPer10msBuffer());
+  EXPECT_EQ(0U, params.GetBytesPer10msBuffer());
   EXPECT_EQ(0.0f, params.GetBufferSizeInMilliseconds());
 }
 
 // Basic test of the AudioParameters class using non default construction.
 TEST_F(AudioManagerTest, AudioParametersWithNonDefaultConstruction) {
   const int kSampleRate = 48000;
   const int kChannels = 1;
   const int kFramesPerBuffer = 480;
-  const int kFramesPer10msBuffer = 480;
+  const size_t kFramesPer10msBuffer = 480;
   const int kBytesPerFrame = 2;
   const float kBufferSizeInMs = 10.0f;
   AudioParameters params(kSampleRate, kChannels, kFramesPerBuffer);
   EXPECT_TRUE(params.is_valid());
   EXPECT_EQ(kSampleRate, params.sample_rate());
   EXPECT_EQ(kChannels, params.channels());
   EXPECT_EQ(kFramesPerBuffer, params.frames_per_buffer());
-  EXPECT_EQ(kSampleRate / 100, params.frames_per_10ms_buffer());
+  EXPECT_EQ(static_cast<size_t>(kSampleRate / 100),
+            params.frames_per_10ms_buffer());
   EXPECT_EQ(kBytesPerFrame, params.GetBytesPerFrame());
   EXPECT_EQ(kBytesPerFrame * kFramesPerBuffer, params.GetBytesPerBuffer());
   EXPECT_EQ(kBytesPerFrame * kFramesPer10msBuffer,
             params.GetBytesPer10msBuffer());
   EXPECT_EQ(kBufferSizeInMs, params.GetBufferSizeInMilliseconds());
 }
 
 }  // namespace webrtc