Mac: implement DnD of URLs onto Omnibox.

chrome/browser/cocoa/autocomplete_text_field.h

Index: chrome/browser/cocoa/autocomplete_text_field.h
diff --git a/chrome/browser/cocoa/autocomplete_text_field.h b/chrome/browser/cocoa/autocomplete_text_field.h
index 73364413bc4776bebb0cc5484cce9bebf713c71d..c343ff0a758c2364a0444b05c35f80f59ab51f9d 100644
--- a/chrome/browser/cocoa/autocomplete_text_field.h
+++ b/chrome/browser/cocoa/autocomplete_text_field.h
@@ -6,9 +6,10 @@
 #define CHROME_BROWSER_COCOA_AUTOCOMPLETE_TEXT_FIELD_H_
 
 #import <Cocoa/Cocoa.h>
-#import "chrome/browser/cocoa/styled_text_field.h"
 
 #include "base/scoped_nsobject.h"
+#import "chrome/browser/cocoa/styled_text_field.h"
+#import "chrome/browser/cocoa/url_drop_target.h"
 
 @class AutocompleteTextFieldCell;
 
@@ -75,13 +76,16 @@ class AutocompleteTextFieldObserver {
   virtual bool OnDoCommandBySelector(SEL cmd) = 0;
 };
 
-@interface AutocompleteTextField : StyledTextField {
+@interface AutocompleteTextField : StyledTextField<URLDropTarget> {
  @private
   // Undo manager for this text field.  We use a specific instance rather than
   // the standard undo manager in order to let us clear the undo stack at will.
   scoped_nsobject<NSUndoManager> undoManager_;
 
   AutocompleteTextFieldObserver* observer_;  // weak, owned by location bar.
+
+  // Handles being a drag-and-drop target.
+  scoped_nsobject<URLDropTargetHandler> dropHandler_;
 }
 
 @property AutocompleteTextFieldObserver* observer;