Autofill: Add legal message footer to save credit card bubble.

chrome/browser/ui/autofill/save_card_bubble_controller.h

 // Copyright 2015 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_UI_AUTOFILL_SAVE_CARD_BUBBLE_CONTROLLER_H_
 #define CHROME_BROWSER_UI_AUTOFILL_SAVE_CARD_BUBBLE_CONTROLLER_H_
 
 #include "base/macros.h"
+#include "base/strings/string16.h"
+#include "ui/gfx/range/range.h"
 
 namespace autofill {
 
 class SaveCardBubbleView;
 
 // Interface that exposes controller functionality to SaveCardBubbleView.
 class SaveCardBubbleController {
  public:
+  // Interaction.
   virtual void OnSaveButton() = 0;
   virtual void OnCancelButton() = 0;
   virtual void OnLearnMoreClicked() = 0;
+  virtual void OnLegalMessageLinkClicked(const gfx::Range& link_range) = 0;
   virtual void OnBubbleClosed() = 0;
 
+  // State.
+
+  // Returns empty string if no legal message should be shown.
+  virtual const base::string16& GetLegalMessage() const = 0;
+  virtual const std::vector<gfx::Range>& GetLegalMessageLinkRanges() const = 0;
+
  protected:
   SaveCardBubbleController() {}
   virtual ~SaveCardBubbleController() {}
 
   DISALLOW_COPY_AND_ASSIGN(SaveCardBubbleController);
 };
 
 }  // namespace autofill
 
 #endif  // CHROME_BROWSER_UI_AUTOFILL_SAVE_CARD_BUBBLE_CONTROLLER_H_