Upgrade scoped_ptr to Chromium's latest version.

Analogous to the recent libjingle change: http://cl/54929753-p10.
This supports scoped_ptr<T[]> and scoped_ptr<C, FreeDeleter> rather
than scoped_array and scoped_ptr_malloc respectively.

- Add Chromium's template-based COMPILE_ASSERT. We didn't have this
previously in order to support the macro in C. Instead, move the
existing macro to compile_assert_c.h.
- Additionally copy the move.h and template_util.h depedencies and add
the WARN_UNUSED_RESULT macro.
- Leave scoped_array and scoped_ptr_malloc for now, but mark as
deprecated.
- Remove scoped_ptr foo(NULL) use. The default constructor handles it.
- Remove the now redundant COMPILE_ASSERT from peerconnection_jni.cc.
- Add a CHECK_ARRAY_SIZE macro to rtp_format_vp8_unittest.cc to remove
some repeated code.

TESTED=trybots
R=pbos@webrtc.org, tommi@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/2449005

git-svn-id: http://webrtc.googlecode.com/svn/trunk@5015 4adac7df-926f-26a2-2b94-8c16560cd09d

webrtc/modules/audio_coding/neteq4/neteq_impl.cc

@@ -59,8 +59,7 @@ NetEqImpl::NetEqImpl(int fs,
                      PacketBuffer* packet_buffer,
                      PayloadSplitter* payload_splitter,
                      TimestampScaler* timestamp_scaler)
-    : background_noise_(NULL),
-      buffer_level_filter_(buffer_level_filter),
+    : buffer_level_filter_(buffer_level_filter),
       decoder_database_(decoder_database),
       delay_manager_(delay_manager),
       delay_peak_detector_(delay_peak_detector),
@@ -70,14 +69,6 @@ NetEqImpl::NetEqImpl(int fs,
       payload_splitter_(payload_splitter),
       timestamp_scaler_(timestamp_scaler),
       vad_(new PostDecodeVad()),
-      algorithm_buffer_(NULL),
-      sync_buffer_(NULL),
-      expand_(NULL),
-      normal_(NULL),
-      merge_(NULL),
-      accelerate_(NULL),
-      preemptive_expand_(NULL),
-      comfort_noise_(NULL),
       last_mode_(kModeNormal),
       mute_factor_array_(NULL),
       decoded_buffer_length_(kMaxFrameSize),