Various mojom cleanup from ContentHandler changes.

mojo/examples/media_viewer/media_viewer.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 <map>
 #include <string>
 
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 192 matching lines @@
   }
 
   virtual ~MediaViewer() {
     if (root_view_)
       root_view_->RemoveObserver(this);
   }
 
  private:
   typedef std::map<std::string, std::string> HandlerMap;
 
-  struct PendingNavigateRequest {
-    uint32_t view_id;
-    NavigationDetailsPtr navigation_details;
-    ResponseDetailsPtr response_details;
-  };
-
 
   // Overridden from ApplicationDelegate:
   virtual void Initialize(ApplicationImpl* app) OVERRIDE {
     view_manager_client_factory_.reset(
         new ViewManagerClientFactory(app->shell(), this));
     app_ = app;
     views_init_.reset(new ViewsInit);
   }
 
   virtual bool ConfigureIncomingConnection(ApplicationConnection* connection)
@@ skipping 89 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(MediaViewer);
 };
 
 }  // namespace examples
 }  // namespace mojo
 
 MojoResult MojoMain(MojoHandle shell_handle) {
   mojo::ApplicationRunnerChromium runner(new mojo::examples::MediaViewer);
   return runner.Run(shell_handle);
 }