Including libyuv headers using fully qualified paths.

Using fully qualified paths to include libyuv headers allows WebRTC to
avoid to rely on the //third_party/libyuv:libyuv_config target to
set the -I compiler flag.

Today some WebRTC targets depend on //third_party/libyuv only to
include //third_party/libyuv:libyuv_config but with fully qualified
paths this should not be needed anymore.

A follow-up CL will remove //third_party/libyuv from some targets that
don't need it because they are not including libyuv headers.

Bug: webrtc:8605
Change-Id: Icec707ca761aaf2ea8088e7f7a05ddde0de2619a
No-Try: True
Reviewed-on: https://webrtc-review.googlesource.com/28220
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Magnus Flodman <mflodman@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#21209}
diff --git a/sdk/objc/Framework/Classes/Video/RTCCVPixelBuffer.mm b/sdk/objc/Framework/Classes/Video/RTCCVPixelBuffer.mm
index 223f112..2038967 100644
--- a/sdk/objc/Framework/Classes/Video/RTCCVPixelBuffer.mm
+++ b/sdk/objc/Framework/Classes/Video/RTCCVPixelBuffer.mm
@@ -14,7 +14,7 @@
 #include "rtc_base/checks.h"
 #include "rtc_base/logging.h"
 
-#include "libyuv.h"
+#include "third_party/libyuv/include/libyuv.h"
 
 @implementation RTCCVPixelBuffer {
   int _width;