Switch C++-style C headers with their C equivalents.

The C++ headers define the C functions within the std:: namespace, but
we mainly don't use the std:: namespace for C functions. Therefore we
should include the C headers.

BUG=1833
R=tommi@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/1917004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@4486 4adac7df-926f-26a2-2b94-8c16560cd09d

webrtc/modules/video_coding/codecs/test/packet_manipulator.cc

@@ -10,8 +10,8 @@
 
 #include "webrtc/modules/video_coding/codecs/test/packet_manipulator.h"
 
-#include <cassert>
-#include <cstdio>
+#include <assert.h>
+#include <stdio.h>
 
 namespace webrtc {
 namespace test {

webrtc/modules/video_coding/codecs/test/packet_manipulator.h

@@ -11,7 +11,7 @@
 #ifndef WEBRTC_MODULES_VIDEO_CODING_CODECS_TEST_PACKET_MANIPULATOR_H_
 #define WEBRTC_MODULES_VIDEO_CODING_CODECS_TEST_PACKET_MANIPULATOR_H_
 
-#include <cstdlib>
+#include <stdlib.h>
 
 #include "webrtc/modules/video_coding/codecs/interface/video_codec_interface.h"
 #include "webrtc/system_wrappers/interface/critical_section_wrapper.h"

webrtc/modules/video_coding/codecs/test/predictive_packet_manipulator.cc

@@ -10,8 +10,8 @@
 
 #include "webrtc/modules/video_coding/codecs/test/predictive_packet_manipulator.h"
 
-#include <cassert>
-#include <cstdio>
+#include <assert.h>
+#include <stdio.h>
 
 #include "webrtc/test/testsupport/packet_reader.h"
 

webrtc/modules/video_coding/codecs/test/stats.cc

@@ -10,9 +10,10 @@
 
 #include "webrtc/modules/video_coding/codecs/test/stats.h"
 
+#include <assert.h>
+#include <stdio.h>
+
 #include <algorithm>  // min_element, max_element
-#include <cassert>
-#include <cstdio>
 
 namespace webrtc {
 namespace test {

webrtc/modules/video_coding/codecs/test/videoprocessor.cc

@@ -10,8 +10,9 @@
 
 #include "webrtc/modules/video_coding/codecs/test/videoprocessor.h"
 
-#include <cassert>
-#include <cstring>
+#include <assert.h>
+#include <string.h>
+
 #include <limits>
 #include <vector>