libyvu r1678 for H420ToRAW bt.709 support.

Bug: libyuv:760
Test: LibYUVConvertTest.H420ToRAW_Opt
Change-Id: I648ac9f86627496995bc2a54b9719b339280ee73
Reviewed-on: https://chromium-review.googlesource.com/777543
Reviewed-by: Weiyong Yao <[email protected]>
Commit-Queue: Frank Barchard <[email protected]>
Cr-Commit-Position: refs/heads/master@{#517683}
diff --git a/DEPS b/DEPS
index 46dc78a..538af75 100644
--- a/DEPS
+++ b/DEPS
@@ -465,7 +465,7 @@
     Var('chromium_git') + '/webm/libwebm.git' + '@' + '4956b2dec65352af32dc71bab553acb631c64177',
 
   'src/third_party/libyuv':
-    Var('chromium_git') + '/libyuv/libyuv.git' + '@' + '8fa02df3c0591754958a50cc2896aafae319f3bc',  # from r1675
+    Var('chromium_git') + '/libyuv/libyuv.git' + '@' + '12c904a97c81c3ef4cab0fc8fb1f0485b4ec4e8c',  # from r1678
 
   'src/third_party/lighttpd': {
       'url': Var('chromium_git') + '/chromium/deps/lighttpd.git' + '@' + Var('lighttpd_revision'),