Convert the AutocompletePopupPositioner into a BubblePositioner in preparatio...

chrome/browser/autocomplete/autocomplete_popup_view_mac.h

 // Copyright (c) 2009 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 CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_POPUP_VIEW_MAC_H_
 #define CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_POPUP_VIEW_MAC_H_
 
 #import <Cocoa/Cocoa.h>
 
 #include <string>
@@ skipping 15 matching lines @@
 // Implements AutocompletePopupView using a raw NSWindow containing an
 // NSTableView.
 //
 // TODO(rohitrao): This class is set up in a way that makes testing hard.
 // Refactor and write unittests.  http://crbug.com/9977
 
 class AutocompletePopupViewMac : public AutocompletePopupView {
  public:
   AutocompletePopupViewMac(AutocompleteEditViewMac* edit_view,
                            AutocompleteEditModel* edit_model,
-                           AutocompletePopupPositioner* positioner,
+                           const BubblePositioner* bubble_positioner,
                            Profile* profile,
                            NSTextField* field);
   virtual ~AutocompletePopupViewMac();
 
   // Implement the AutocompletePopupView interface.
   virtual bool IsOpen() const;
   virtual void InvalidateLine(size_t line) {
     // TODO(shess): Verify that there is no need to implement this.
     // This is currently used in two places in the model:
     //
@@ skipping 45 matching lines @@
       const std::wstring &matchString,
       const AutocompleteMatch::ACMatchClassifications &classifications,
       NSColor* textColor, gfx::Font& font);
 
  private:
   // Create the popup_ instance if needed.
   void CreatePopupIfNeeded();
 
   scoped_ptr<AutocompletePopupModel> model_;
   AutocompleteEditViewMac* edit_view_;
-  AutocompletePopupPositioner* positioner_;  // owned by toolbar controller
+  const BubblePositioner* bubble_positioner_;  // owned by toolbar controller
   NSTextField* field_;  // owned by tab controller
 
   scoped_nsobject<AutocompleteMatrixTarget> matrix_target_;
   // TODO(shess): Before checkin review implementation to make sure
   // that popup_'s object hierarchy doesn't keep references to
   // destructed objects.
   scoped_nsobject<NSWindow> popup_;
 
   DISALLOW_COPY_AND_ASSIGN(AutocompletePopupViewMac);
 };
 
 #endif  // CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_POPUP_VIEW_MAC_H_