[Mac] Fix for security indicator drag&drop navigation

chrome/browser/ui/cocoa/location_bar/autocomplete_text_field_cell.h

 // Copyright (c) 2010 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.
 
 #include <vector>
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/mac/scoped_nsobject.h"
 #import "chrome/browser/ui/cocoa/styled_text_field_cell.h"
@@ skipping 46 matching lines @@
 
 // The width available after accounting for decorations.
 - (CGFloat)availableWidthInFrame:(const NSRect)frame;
 
 // Return the frame for |aDecoration| if the cell is in |cellFrame|.
 // Returns |NSZeroRect| for decorations which are not currently
 // visible.
 - (NSRect)frameForDecoration:(const LocationBarDecoration*)aDecoration
                      inFrame:(NSRect)cellFrame;
 
+// Returns true if it's okay to drop dragged data into the view at the
+// given location.
+- (BOOL)canDropAtLocationInWindow:(NSPoint)location
+                           ofView:(AutocompleteTextField*)controlView;
+
+// Find the decoration under the location in the window. Return |NULL| if
+// there's nothing in the location.
+- (LocationBarDecoration*)decorationForLocationInWindow:(NSPoint)location
+                                                 inRect:(NSRect)cellFrame
+                                                 ofView:(AutocompleteTextField*)
+                                                            field;
+
 // Find the decoration under the event.  |NULL| if |theEvent| is not
 // over anything.
 - (LocationBarDecoration*)decorationForEvent:(NSEvent*)theEvent
                                       inRect:(NSRect)cellFrame
                                       ofView:(AutocompleteTextField*)field;
 
 // Return the appropriate menu for any decorations under event.
 // Returns nil if no menu is present for the decoration, or if the
 // event is not over a decoration.
 - (NSMenu*)decorationMenuForEvent:(NSEvent*)theEvent
@@ skipping 19 matching lines @@
 // Gets and sets |hideFocusState|. This allows the text field to have focus but
 // to appear unfocused.
 - (BOOL)hideFocusState;
 - (void)setHideFocusState:(BOOL)hideFocusState
                    ofView:(AutocompleteTextField*)controlView;
 
 // Handles the |event| that caused |controlView| to become firstResponder.
 - (void)handleFocusEvent:(NSEvent*)event
                   ofView:(AutocompleteTextField*)controlView;
 @end