Bugfix for clang.

Review URL: http://webrtc-codereview.appspot.com/351001

git-svn-id: http://webrtc.googlecode.com/svn/trunk@1375 4adac7df-926f-26a2-2b94-8c16560cd09d

src/modules/rtp_rtcp/test/testAPI/test_api.h

@@ -12,7 +12,7 @@
 #include "rtp_rtcp.h"
 #include "rtp_rtcp_defines.h"
 
-using namespace webrtc;
+namespace webrtc {
 
 class FakeRtpRtcpClock : public RtpRtcpClock {
  public:
@@ -82,4 +82,5 @@ class RtpReceiver : public RtpData {
   }
 };
 
+}  // namespace webrtc