Add Chromium-side changes for MediaSource::isTypeSupported()

content/worker/worker_webkitplatformsupport_impl.cc

Index: content/worker/worker_webkitplatformsupport_impl.cc
diff --git a/content/worker/worker_webkitplatformsupport_impl.cc b/content/worker/worker_webkitplatformsupport_impl.cc
index 83b417f0b35b0f692d9b4fd9f740a0774efdd53f..b81990d9815192c6d998051c9b0e83d943c9794e 100644
--- a/content/worker/worker_webkitplatformsupport_impl.cc
+++ b/content/worker/worker_webkitplatformsupport_impl.cc
@@ -233,6 +233,12 @@ WorkerWebKitPlatformSupportImpl::supportsMediaMIMEType(
   return WebMimeRegistry::IsSupported;
 }
 
+bool WorkerWebKitPlatformSupportImpl::supportsMediaSourceMIMEType(
+    const WebKit::WebString& mimeType, const WebKit::WebString& codecs) {
+  NOTREACHED();
+  return false;
+}
+
 WebMimeRegistry::SupportsType
 WorkerWebKitPlatformSupportImpl::supportsNonImageMIMEType(
     const WebString&) {