Reland of Enable cpplint and fix cpplint errors in webrtc/*audio

webrtc/audio/utility/audio_frame_operations.h

Index: webrtc/audio/utility/audio_frame_operations.h
diff --git a/webrtc/audio/utility/audio_frame_operations.h b/webrtc/audio/utility/audio_frame_operations.h
index de6fdc472d710074ed603600ce73b8a493165447..56f318fadeacd7c2dd6a482318ac1291458f3842 100644
--- a/webrtc/audio/utility/audio_frame_operations.h
+++ b/webrtc/audio/utility/audio_frame_operations.h
@@ -113,9 +113,19 @@ class AudioFrameOperations {
   // Halve samples in |frame|.
   static void ApplyHalfGain(AudioFrame* frame);
 
-  static int Scale(float left, float right, AudioFrame& frame);
+  static int Scale(float left, float right, AudioFrame* frame);
 
-  static int ScaleWithSat(float scale, AudioFrame& frame);
+  static int Scale(float left, float right, AudioFrame& frame) {  // NOLINT
+    // TODO(oprypin): drop this method
+    return Scale(left, right, &frame);
+  }
+
+  static int ScaleWithSat(float scale, AudioFrame* frame);
+
+  static int ScaleWithSat(float scale, AudioFrame& frame) {  // NOLINT
+    // TODO(oprypin): drop this method
+    return ScaleWithSat(scale, &frame);
+  }
 };
 
 }  // namespace webrtc