Remove iOS ifdefs in src/content.

content/public/browser/navigation_controller.h

 // Copyright (c) 2012 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 CONTENT_PUBLIC_BROWSER_NAVIGATION_CONTROLLER_H_
 #define CONTENT_PUBLIC_BROWSER_NAVIGATION_CONTROLLER_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 377 matching lines @@
 
   // Removing of entries -------------------------------------------------------
 
   // Removes the entry at the specified |index|.  If the index is the last
   // committed index or the pending entry, this does nothing and returns false.
   // Otherwise this call discards any transient or pending entries.
   virtual bool RemoveEntryAtIndex(int index) = 0;
 
   // Random --------------------------------------------------------------------
 
-  // Session storage depends on dom_storage that depends on blink::WebString,
-  // which cannot be used on iOS.
-#if !defined(OS_IOS)
+  // Session storage depends on dom_storage that depends on blink::WebString.
   // Returns all the SessionStorageNamespace objects that this
   // NavigationController knows about, the map key is a StoragePartition id.
   virtual const SessionStorageNamespaceMap&
       GetSessionStorageNamespaceMap() const = 0;
 
   // TODO(ajwong): Remove this once prerendering, instant, and session restore
   // are migrated.
   virtual SessionStorageNamespace* GetDefaultSessionStorageNamespace() = 0;
-#endif
 
   // Sets the max restored page ID this NavigationController has seen, if it
   // was restored from a previous session.
   virtual void SetMaxRestoredPageID(int32_t max_id) = 0;
 
   // Returns the largest restored page ID seen in this navigation controller,
   // if it was restored from a previous session.  (-1 otherwise)
   virtual int32_t GetMaxRestoredPageID() const = 0;
 
   // Returns true if a reload happens when activated (SetActive(true) is
@@ skipping 73 matching lines @@
 
  private:
   // This interface should only be implemented inside content.
   friend class NavigationControllerImpl;
   NavigationController() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_NAVIGATION_CONTROLLER_H_