Remove extraneous namespaces

mojo/examples/png_viewer/png_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 <algorithm>
 
 #include "base/message_loop/message_loop.h"
 #include "base/strings/string_tokenizer.h"
 #include "mojo/examples/media_viewer/media_viewer.mojom.h"
 #include "mojo/public/cpp/application/application_connection.h"
@@ skipping 29 matching lines @@
   // Overridden from ZoomableMedia:
   virtual void ZoomIn() OVERRIDE;
   virtual void ZoomOut() OVERRIDE;
   virtual void ZoomToActualSize() OVERRIDE;
 
   PNGViewer* viewer_;
 
   DISALLOW_COPY_AND_ASSIGN(ZoomableMediaImpl);
 };
 
-class NavigatorImpl : public InterfaceImpl<navigation::Navigator> {
+class NavigatorImpl : public InterfaceImpl<Navigator> {
  public:
   explicit NavigatorImpl(PNGViewer* viewer) : viewer_(viewer) {}
   virtual ~NavigatorImpl() {}
 
  private:
-  // Overridden from navigation::Navigate:
+  // Overridden from Navigator:
   virtual void Navigate(
       uint32_t node_id,
-      navigation::NavigationDetailsPtr navigation_details,
-      navigation::ResponseDetailsPtr response_details) OVERRIDE {
+      NavigationDetailsPtr navigation_details,
+      ResponseDetailsPtr response_details) OVERRIDE {
     int content_length = GetContentLength(response_details->response->headers);
     unsigned char* data = new unsigned char[content_length];
     unsigned char* buf = data;
     uint32_t bytes_remaining = content_length;
     uint32_t num_bytes = bytes_remaining;
     while (bytes_remaining > 0) {
       MojoResult result = ReadDataRaw(
           response_details->response->body.get(),
           buf,
           &num_bytes,
@@ skipping 88 matching lines @@
 
  private:
   static const uint16_t kMaxZoomPercentage = 400;
   static const uint16_t kMinZoomPercentage = 20;
   static const uint16_t kDefaultZoomPercentage = 100;
   static const uint16_t kZoomStep = 20;
 
   // Overridden from ApplicationDelegate:
   virtual bool ConfigureIncomingConnection(ApplicationConnection* connection)
       MOJO_OVERRIDE {
-    connection->AddService<navigation::Navigator>(this);
+    connection->AddService<Navigator>(this);
     connection->AddService<ZoomableMedia>(this);
     connection->AddService(&view_manager_client_factory_);
     return true;
   }
 
   // Overridden from view_manager::ViewManagerDelegate:
   virtual void OnRootAdded(view_manager::ViewManager* view_manager,
                            view_manager::Node* root) OVERRIDE {
     root_ = root;
     root_->AddObserver(this);
@@ skipping 65 matching lines @@
 }
 
 }  // namespace examples
 
 // static
 ApplicationDelegate* ApplicationDelegate::Create() {
   return new examples::PNGViewer;
 }
 
 }  // namespace mojo