Enforce all the source files to be encoded in UTF-8.

jingle/notifier/listener/push_notifications_subscribe_task.cc

Index: jingle/notifier/listener/push_notifications_subscribe_task.cc
diff --git a/jingle/notifier/listener/push_notifications_subscribe_task.cc b/jingle/notifier/listener/push_notifications_subscribe_task.cc
index 5dc7d0855b1da317400c4cf23adbd6a8a485cda4..892e83bf9e4779fa34270591e08c40a01869bbb8 100644
--- a/jingle/notifier/listener/push_notifications_subscribe_task.cc
+++ b/jingle/notifier/listener/push_notifications_subscribe_task.cc
@@ -85,8 +85,8 @@ buzz::XmlElement* PushNotificationsSubscribeTask::MakeSubscriptionMessage(
       kPushNotificationsNamespace, "subscribe");
 
   // Create the subscription stanza using the notifications protocol.
-  // <iq from={full_jid} to={bare_jid} type=’set’ id={id}>
-  //  <subscribe xmlns=’google:push’>
+  // <iq from={full_jid} to={bare_jid} type="set" id={id}>
+  //  <subscribe xmlns="google:push">
   //    <item channel={channel_name} from={domain_name or bare_jid}/>
   //    <item channel={channel_name2} from={domain_name or bare_jid}/>
   //    <item channel={channel_name3} from={domain_name or bare_jid}/>