Remove support for PushSubscription.subscriptionId.

Source/platform/exported/WebPushSubscription.cpp

Index: Source/platform/exported/WebPushSubscription.cpp
diff --git a/Source/platform/exported/WebPushSubscription.cpp b/Source/platform/exported/WebPushSubscription.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..af44d85cf330dfe01ca43f6a8a489010850698a9
--- /dev/null
+++ b/Source/platform/exported/WebPushSubscription.cpp
@@ -0,0 +1,21 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "config.h"
+#include "public/platform/modules/push_messaging/WebPushSubscription.h"
+
+#include "wtf/text/WTFString.h"
+
+namespace blink {
+
+WebPushSubscription::WebPushSubscription(const WebString& endpointWithoutSubscriptionId, const WebString& subscriptionId)
+{
+    String concatenatedEndpoint = endpointWithoutSubscriptionId;

[Mike West, 2015/06/02 04:40:53]

Is this supposed to be a URL? Why store it as a string?

[Peter Beverloo, 2015/06/02 11:21:40]

I like it! Done, thanks Mike!

+    concatenatedEndpoint.append("/");
+    concatenatedEndpoint.append(subscriptionId);
+
+    endpoint = concatenatedEndpoint;
+}
+
+} // namespace blink