Clean up left-overs of PushSubscription.subscriptionId.

public/platform/modules/push_messaging/WebPushSubscription.h

Index: public/platform/modules/push_messaging/WebPushSubscription.h
diff --git a/public/platform/modules/push_messaging/WebPushSubscription.h b/public/platform/modules/push_messaging/WebPushSubscription.h
index b582bf4c92b11a7dab59a96c287ae03e2ca29569..d937e5f80591aee1682390be5607121cf8bc43e8 100644
--- a/public/platform/modules/push_messaging/WebPushSubscription.h
+++ b/public/platform/modules/push_messaging/WebPushSubscription.h
@@ -5,7 +5,6 @@
 #ifndef WebPushSubscription_h
 #define WebPushSubscription_h
 
-#include "public/platform/WebCommon.h"
 #include "public/platform/WebString.h"
 #include "public/platform/WebURL.h"
 
@@ -17,8 +16,8 @@ struct WebPushSubscription {
     {
     }
 
-    // TODO(peter): Remove this constructor when the embedder switched over to the one above.
-    BLINK_PLATFORM_EXPORT WebPushSubscription(const WebString& endpointWithoutSubscriptionId, const WebString& subscriptionId);
+    // TODO(peter): Include encryption keys and additional properties here
+    // when the specification finalizes these bits.
 
     WebURL endpoint;
 };