Add VP9 codec to VCM and vie_auto_test.

Include VP9 tests in videoprocessor_integrationtests.
Include end-to-end send/receiveVP9 test.
Passes trybots.

R=kjellander@webrtc.org, mflodman@webrtc.org, stefan@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/29449004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@7422 4adac7df-926f-26a2-2b94-8c16560cd09d

webrtc/modules/video_coding/main/test/test_callbacks.cc

@@ -82,6 +82,9 @@ VCMEncodeCompleteCallback::SendData(
         rtpInfo.type.Video.codecHeader.VP8.pictureId =
             videoHdr->codecHeader.VP8.pictureId;
         break;
+    case webrtc::kRtpVideoGeneric:
+      // Leave for now, until we add kRtpVideoVp9 to RTP.
+      break;
     default:
         assert(false);
         return -1;