Add an AlignedFreeDeleter and remove scoped_ptr_malloc.

- Transition scoped_ptr_mallocs to scoped_ptr.
- AlignedFreeDeleter matches Chromium's version.

TESTED=try bots
R=turaj@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/8969005

git-svn-id: http://webrtc.googlecode.com/svn/trunk@5587 4adac7df-926f-26a2-2b94-8c16560cd09d

webrtc/modules/audio_processing/utility/ring_buffer_unittest.cc

@@ -22,7 +22,12 @@ extern "C" {
 
 namespace webrtc {
 
-typedef scoped_ptr_malloc<RingBuffer, WebRtc_FreeBuffer> scoped_ring_buffer;
+struct FreeBufferDeleter {
+  inline void operator()(void* ptr) const {
+    WebRtc_FreeBuffer(ptr);
+  }
+};
+typedef scoped_ptr<RingBuffer, FreeBufferDeleter> scoped_ring_buffer;
 
 static void AssertElementEq(int expected, int actual) {
   ASSERT_EQ(expected, actual);