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
diff --git a/webrtc/modules/video_render/test/testAPI/testAPI.cc b/webrtc/modules/video_render/test/testAPI/testAPI.cc
index 5f4fd56..9764ae6 100644
--- a/webrtc/modules/video_render/test/testAPI/testAPI.cc
+++ b/webrtc/modules/video_render/test/testAPI/testAPI.cc
@@ -15,7 +15,7 @@
 #if defined(_WIN32)
 #include <tchar.h>
 #include <windows.h>
-#include <cassert>
+#include <assert.h>
 #include <fstream>
 #include <iostream>
 #include <string>