Add support for Rec709 color space videos in software YUV convert path.

content/browser/media/media_browsertest.cc

Index: content/browser/media/media_browsertest.cc
diff --git a/content/browser/media/media_browsertest.cc b/content/browser/media/media_browsertest.cc
index 46f7a49b618867bfe9ed224022ce21a7a0ad5505..27e7a05b91c3dd25a1a77c86322893ea74c43ad9 100644
--- a/content/browser/media/media_browsertest.cc
+++ b/content/browser/media/media_browsertest.cc
@@ -263,6 +263,10 @@ IN_PROC_BROWSER_TEST_F(MediaTest, MAYBE(Yuv420pH264)) {
   RunColorFormatTest("yuv420p.mp4", kEnded);
 }
 
+IN_PROC_BROWSER_TEST_F(MediaTest, MAYBE(Yuv420pRec709H264)) {
+  RunColorFormatTest("yuv420p.mp4", kEnded);
+}
+
 IN_PROC_BROWSER_TEST_F(MediaTest, MAYBE(Yuvj420pH264)) {
   RunColorFormatTest("yuvj420p.mp4", kEnded);
 }