Whitespace and indentation

Fix indentation to be multiple of 4.
Make it easier to search:
  sp< not sp < to
  "switch (...)" instead of "switch(...)" (also "if" and "while")
Remove redundant blank line at start or EOF.
Remove whitespace at end of line.
Remove extra blank lines where they don't add value.

Use git diff -b or -w to verify.

Change-Id: I966b7ba852faa5474be6907fb212f5e267c2874e
diff --git a/include/media/IAudioTrack.h b/include/media/IAudioTrack.h
index 77f3e21..577b095 100644
--- a/include/media/IAudioTrack.h
+++ b/include/media/IAudioTrack.h
@@ -32,7 +32,7 @@
 
 class IAudioTrack : public IInterface
 {
-public: 
+public:
     DECLARE_META_INTERFACE(AudioTrack);
 
     /* Get this track's control block */
@@ -45,7 +45,7 @@
     virtual status_t    start(pid_t tid) = 0;
 
     /* Stop a track. If set, the callback will cease being called and
-     * obtainBuffer will return an error. Buffers that are already released 
+     * obtainBuffer will return an error. Buffers that are already released
      * will continue to be processed, unless/until flush() is called.
      */
     virtual void        stop() = 0;
@@ -59,9 +59,9 @@
      * While muted, the callback, if set, is still called.
      */
     virtual void        mute(bool) = 0;
-    
+
     /* Pause a track. If set, the callback will cease being called and
-     * obtainBuffer will return an error. Buffers that are already released 
+     * obtainBuffer will return an error. Buffers that are already released
      * will continue to be processed, unless/until flush() is called.
      */
     virtual void        pause() = 0;