Remove prefixed EME.

third_party/WebKit/Source/modules/mediasource/MediaSource.cpp

Index: third_party/WebKit/Source/modules/mediasource/MediaSource.cpp
diff --git a/third_party/WebKit/Source/modules/mediasource/MediaSource.cpp b/third_party/WebKit/Source/modules/mediasource/MediaSource.cpp
index 0243901a8f20d077a3d8f0b90e158cb8a4e33ee2..6db94574f2e9aedf91a647868bce57c431664536 100644
--- a/third_party/WebKit/Source/modules/mediasource/MediaSource.cpp
+++ b/third_party/WebKit/Source/modules/mediasource/MediaSource.cpp
@@ -251,7 +251,7 @@ bool MediaSource::isTypeSupported(const String& type)
 
     // Note: MediaSource.isTypeSupported() returning true implies that HTMLMediaElement.canPlayType() will return "maybe" or "probably"
     // since it does not make sense for a MediaSource to support a type the HTMLMediaElement knows it cannot play.
-    if (HTMLMediaElement::supportsType(contentType, String()) == WebMimeRegistry::IsNotSupported) {
+    if (HTMLMediaElement::supportsType(contentType) == WebMimeRegistry::IsNotSupported) {
         WTF_LOG(Media, "MediaSource::isTypeSupported(%s) -> false (not supported by HTMLMediaElement)", type.ascii().data());
         return false;
     }