WebString: makes string16 conversions explicit (part 1: blink, content)

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..d7f2b5cc70fdff151a939ee1e4bf27deb62df813 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::fromUTF8(source_id),
                            blink::WebMediaStreamSource::TypeVideo,
-                           base::UTF8ToUTF16(kPepperVideoSourceName),
+                           blink::WebString::fromUTF8(kPepperVideoSourceName),
                            false /* remote */);
   MediaStreamVideoSource* const source =
       new VideoSource(weak_factory_.GetWeakPtr());