Move NativeWebKeyboardEvent to the content namespace.

chrome/browser/external_tab/external_tab_container_win.h

Index: chrome/browser/external_tab/external_tab_container_win.h
===================================================================
--- chrome/browser/external_tab/external_tab_container_win.h	(revision 137859)
+++ chrome/browser/external_tab/external_tab_container_win.h	(working copy)
@@ -146,10 +146,11 @@
                                   int64 source_frame_id,
                                   const GURL& target_url,
                                   content::WebContents* new_contents) OVERRIDE;
-  virtual bool PreHandleKeyboardEvent(const NativeWebKeyboardEvent& event,
-                                      bool* is_keyboard_shortcut) OVERRIDE;
+  virtual bool PreHandleKeyboardEvent(
+      const content::NativeWebKeyboardEvent& event,
+      bool* is_keyboard_shortcut) OVERRIDE;
   virtual void HandleKeyboardEvent(
-      const NativeWebKeyboardEvent& event) OVERRIDE;
+      const content::NativeWebKeyboardEvent& event) OVERRIDE;
   virtual bool TakeFocus(bool reverse) OVERRIDE;
   virtual bool CanDownload(content::RenderViewHost* render_view_host,
                            int request_id,