Use unique URLs rather than qualifiers to uniquify RenderProcesses.

mojo/shell/application_manager.h

 // 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.
 
 #ifndef MOJO_SHELL_APPLICATION_MANAGER_H_
 #define MOJO_SHELL_APPLICATION_MANAGER_H_
 
 #include <map>
 
 #include "base/macros.h"
@@ skipping 74 matching lines @@
   // Destroys all Shell-ends of connections established with Applications.
   // Applications connected by this ApplicationManager will observe pipe errors
   // and have a chance to shutdown.
   void TerminateShellConnections();
 
   // Removes a ApplicationInstance when it encounters an error.
   void OnApplicationInstanceError(ApplicationInstance* instance);
 
   ApplicationInstance* GetApplicationInstance(const Identity& identity) const;
 
-  void CreateInstanceForHandle(ScopedHandle channel,
-                               const GURL& url,
-                               const std::string& qualifier);
+  void CreateInstanceForHandle(ScopedHandle channel, const GURL& url);
 
  private:
   using IdentityToInstanceMap = std::map<Identity, ApplicationInstance*>;
   using URLToLoaderMap = std::map<GURL, ApplicationLoader*>;
 
   // Takes the contents of |params| only when it returns true.
   bool ConnectToRunningApplication(
       scoped_ptr<ConnectToApplicationParams>* params);
 
   InterfaceRequest<Application> CreateAndConnectToInstance(
@@ skipping 37 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(ApplicationManager);
 };
 
 Shell::ConnectToApplicationCallback EmptyConnectCallback();
 
 }  // namespace shell
 }  // namespace mojo
 
 #endif  // MOJO_SHELL_APPLICATION_MANAGER_H_