Move NativeWebKeyboardEvent to the content namespace.

chrome/browser/debugger/devtools_window.h

Index: chrome/browser/debugger/devtools_window.h
===================================================================
--- chrome/browser/debugger/devtools_window.h	(revision 137859)
+++ chrome/browser/debugger/devtools_window.h	(working copy)
@@ -116,10 +116,11 @@
                               bool user_gesture) OVERRIDE;
   virtual void CloseContents(content::WebContents* source) OVERRIDE {}
   virtual bool CanReloadContents(content::WebContents* source) const 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 content::JavaScriptDialogCreator*
       GetJavaScriptDialogCreator() OVERRIDE;