[sessions] Properly namespace recently-componentized TabRestore code

components/sessions/core/live_tab.h

 // 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.
 
 #ifndef COMPONENTS_SESSIONS_CORE_LIVE_TAB_H_
 #define COMPONENTS_SESSIONS_CORE_LIVE_TAB_H_
 
 #include "base/basictypes.h"
 #include "components/sessions/serialized_navigation_entry.h"
 #include "components/sessions/sessions_export.h"
 
 namespace sessions {
 
 // Interface that represents a currently-live tab to the core sessions code, and
 // in particular, the tab restore service. This interface abstracts the concrete
 // representation of a live tab on different platforms (e.g., WebContents on
 // //content-based platforms).
 class SESSIONS_EXPORT LiveTab {
  public:
   virtual ~LiveTab() {}
 
   // Methods that return information about the navigation state of the tab.
   virtual int GetCurrentEntryIndex() = 0;
   virtual int GetPendingEntryIndex() = 0;
-  virtual sessions::SerializedNavigationEntry GetEntryAtIndex(int index) = 0;
-  virtual sessions::SerializedNavigationEntry GetPendingEntry() = 0;
+  virtual SerializedNavigationEntry GetEntryAtIndex(int index) = 0;
+  virtual SerializedNavigationEntry GetPendingEntry() = 0;
   virtual int GetEntryCount() = 0;
 
   // Loads the current page if necessary (where "necessary" is defined on a
   // platform-specific basis).
   virtual void LoadIfNecessary() = 0;
 
   // Returns the user agent override, if any.
   virtual const std::string& GetUserAgentOverride() const = 0;
 };
 
 }  // namespace sessions
 
 #endif  // COMPONENTS_SESSIONS_CORE_LIVE_TAB_H_