Add EME support for new VP9 codec string in WebM.

chrome/renderer/media/chrome_key_systems.cc

Index: chrome/renderer/media/chrome_key_systems.cc
diff --git a/chrome/renderer/media/chrome_key_systems.cc b/chrome/renderer/media/chrome_key_systems.cc
index de68108fbc174dce1e627dea1f0ac6b9cccd1299..2f51d297aaf491a675a5c844b63ad4d1b1b38d71 100644
--- a/chrome/renderer/media/chrome_key_systems.cc
+++ b/chrome/renderer/media/chrome_key_systems.cc
@@ -196,13 +196,13 @@ static void AddPepperBasedWidevine(
   for (size_t i = 0; i < codecs.size(); ++i) {
     if (codecs[i] == kCdmSupportedCodecVp8)
       supported_codecs |= media::EME_CODEC_WEBM_VP8;
-    if (codecs[i] == kCdmSupportedCodecVp9)
+    if (codecs[i] == kCdmSupportedCodecVp9) {
       supported_codecs |= media::EME_CODEC_WEBM_VP9;
+      supported_codecs |= media::EME_CODEC_COMMON_VP9;
+    }
 #if BUILDFLAG(USE_PROPRIETARY_CODECS)
     if (codecs[i] == kCdmSupportedCodecAvc1)
       supported_codecs |= media::EME_CODEC_MP4_AVC1;
-    if (codecs[i] == kCdmSupportedCodecVp9)
-      supported_codecs |= media::EME_CODEC_MP4_VP9;
 #endif  // BUILDFLAG(USE_PROPRIETARY_CODECS)
   }