Change media source switch to refer to the prefixed API.

content/renderer/render_thread_impl.cc

Index: content/renderer/render_thread_impl.cc
diff --git a/content/renderer/render_thread_impl.cc b/content/renderer/render_thread_impl.cc
index 2896a5496be4a6daa2e2f819ea603d10ad8aebb4..f10fce2e4d4687eb7fdf70c1284e5717583f7aa4 100644
--- a/content/renderer/render_thread_impl.cc
+++ b/content/renderer/render_thread_impl.cc
@@ -624,7 +624,7 @@ void RenderThreadImpl::WidgetRestored() {
 
 static void AdjustRuntimeFeatureDefaultsForPlatform() {
 #if defined(OS_ANDROID) && !defined(GOOGLE_TV)
-  WebRuntimeFeatures::enableMediaSource(false);
+  WebRuntimeFeatures::enableWebKitMediaSource(false);
 #endif
 
 #if defined(OS_ANDROID)
@@ -658,8 +658,8 @@ static void AdjustRuntimeFeaturesFromArgs(const CommandLine& command_line) {
     WebRuntimeFeatures::enableGeolocation(false);
 
 #if !defined(OS_ANDROID) || defined(GOOGLE_TV)
-  if (command_line.HasSwitch(switches::kDisableMediaSource))
-    WebRuntimeFeatures::enableMediaSource(false);
+  if (command_line.HasSwitch(switches::kDisableWebKitMediaSource))
+    WebRuntimeFeatures::enableWebKitMediaSource(false);
 #endif
 
 #if defined(OS_ANDROID)