Pass the final URL an app was loaded from to the app in Initialize().

examples/content_handler_demo/content_handler_demo.cc

 // Copyright 2014 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 <stdio.h>
 
 #include "mojo/public/c/system/main.h"
 #include "mojo/public/cpp/application/application_delegate.h"
 #include "mojo/public/cpp/application/application_impl.h"
 #include "mojo/public/cpp/application/application_runner.h"
 #include "mojo/public/cpp/application/interface_factory_impl.h"
 #include "mojo/public/cpp/bindings/strong_binding.h"
 #include "mojo/services/content_handler/public/interfaces/content_handler.mojom.h"
 
 namespace mojo {
 namespace examples {
 
 class PrintBodyApplication : public Application {
  public:
   PrintBodyApplication(InterfaceRequest<Application> request,
                        ScopedDataPipeConsumerHandle body)
       : binding_(this, request.Pass()), body_(body.Pass()) {}
 
-  virtual void Initialize(ShellPtr shell, Array<String> args) override {
+  virtual void Initialize(ShellPtr shell,
+                          Array<String> args,
+                          const mojo::String& url) override {
     shell_ = shell.Pass();
   }
   virtual void RequestQuit() override {}
 
   virtual void AcceptConnection(const String& requestor_url,
                                 InterfaceRequest<ServiceProvider> services,
                                 ServiceProviderPtr exported_services) override {
     printf("ContentHandler::OnConnect - requestor_url:%s - body follows\n\n",
            requestor_url.To<std::string>().c_str());
     PrintResponse(body_.Pass());
@@ skipping 63 matching lines @@
   MOJO_DISALLOW_COPY_AND_ASSIGN(ContentHandlerApp);
 };
 
 }  // namespace examples
 }  // namespace mojo
 
 MojoResult MojoMain(MojoHandle shell_handle) {
   mojo::ApplicationRunner runner(new mojo::examples::ContentHandlerApp);
   return runner.Run(shell_handle);
 }