Make sure WebRTC works without libvpx VP9 support.

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

Index: webrtc/modules/video_coding/codecs/test/videoprocessor_integrationtest.cc
diff --git a/webrtc/modules/video_coding/codecs/test/videoprocessor_integrationtest.cc b/webrtc/modules/video_coding/codecs/test/videoprocessor_integrationtest.cc
index 835a3dc36e36062825abc0551e510571754bba91..9f361dc62614dea9f0e6b6f7aaa41f4d344b14d5 100644
--- a/webrtc/modules/video_coding/codecs/test/videoprocessor_integrationtest.cc
+++ b/webrtc/modules/video_coding/codecs/test/videoprocessor_integrationtest.cc
@@ -626,6 +626,7 @@ TEST_F(VideoProcessorIntegrationTest, Process0PercentPacketLossH264) {
 // Fails on iOS. See webrtc:4755.
 #if !defined(WEBRTC_IOS)
 
+#if !defined(RTC_DISABLE_VP9)
 // VP9: Run with no packet loss and fixed bitrate. Quality should be very high.
 // One key frame (first frame only) in sequence. Setting |key_frame_interval|
 // to -1 below means no periodic key frames in test.
@@ -780,6 +781,8 @@ TEST_F(VideoProcessorIntegrationTest, ProcessNoLossSpatialResizeFrameDropVP9) {
 // TODO(marpan): Add temporal layer test for VP9, once changes are in
 // vp9 wrapper for this.
 
+#endif  // !defined(RTC_DISABLE_VP9)
+
 // VP8: Run with no packet loss and fixed bitrate. Quality should be very high.
 // One key frame (first frame only) in sequence. Setting |key_frame_interval|
 // to -1 below means no periodic key frames in test.