Use explicit WebString <-> string{16,} conversion methods in content/renderer/pepper

content/renderer/pepper/pepper_media_stream_video_track_host.cc

Index: content/renderer/pepper/pepper_media_stream_video_track_host.cc
diff --git a/content/renderer/pepper/pepper_media_stream_video_track_host.cc b/content/renderer/pepper/pepper_media_stream_video_track_host.cc
index 288bae36997fac871834b479fc430c5bdb139b16..f536ef3ff515b377a5a25428776d4dcb09efe44c 100644
--- a/content/renderer/pepper/pepper_media_stream_video_track_host.cc
+++ b/content/renderer/pepper/pepper_media_stream_video_track_host.cc
@@ -517,9 +517,9 @@ void PepperMediaStreamVideoTrackHost::InitBlinkTrack() {
   std::string source_id;
   base::Base64Encode(base::RandBytesAsString(64), &source_id);
   blink::WebMediaStreamSource webkit_source;
-  webkit_source.initialize(base::UTF8ToUTF16(source_id),
+  webkit_source.initialize(blink::WebString::fromASCII(source_id),
                            blink::WebMediaStreamSource::TypeVideo,
-                           base::UTF8ToUTF16(kPepperVideoSourceName),
+                           blink::WebString::fromASCII(kPepperVideoSourceName),

[kinuko, 2016/12/22 06:53:21]

Looks like source_id (which is base64 encoded string) and kPepperVideoSourceName
are both ascii-only

                            false /* remote */);
   MediaStreamVideoSource* const source =
       new VideoSource(weak_factory_.GetWeakPtr());