[WebsiteSettings] Change permission bubble API to adapt to new mocks.

chrome/browser/ui/website_settings/permission_bubble_view.h

 // Copyright 2014 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_WEBSITE_SETTINGS_PERMISSION_BUBBLE_VIEW_H_
 #define CHROME_BROWSER_UI_WEBSITE_SETTINGS_PERMISSION_BUBBLE_VIEW_H_
 
 #include <vector>
 
 class PermissionBubbleRequest;
 class PermissionBubbleManager;
 
 // This class is the platform-independent interface through which the permission
 // bubble managers (which are one per tab) communicate to the UI surface.
 // When the visible tab changes, the UI code must provide an object of this type
 // to the manager for the visible tab.
 class PermissionBubbleView {
  public:
   // The delegate will receive events caused by user action which need to
   // be persisted in the per-tab UI state.
   class Delegate {
    public:
+    virtual ~Delegate() {}
+
     virtual void ToggleAccept(int index, bool new_value) = 0;
     virtual void SetCustomizationMode() = 0;
     virtual void Accept() = 0;
     virtual void Deny() = 0;
     virtual void Closing() = 0;
     virtual void SetView(PermissionBubbleView* view) = 0;
   };
 
+  virtual ~PermissionBubbleView() {}
+
   // Sets the delegate which will receive UI events forwarded from the bubble.
   virtual void SetDelegate(Delegate* delegate) = 0;
 
-  // Causes the bubble to show up with the given contents.
+  // Causes the bubble to show up with the given contents. This method may be
+  // called with mostly-identical contents to the existing contents. This can
+  // happen, for instance, if a new permission is requested and
+  // CanAcceptRequestUpdate() is true.
   virtual void Show(
       const std::vector<PermissionBubbleRequest*>& requests,
       const std::vector<bool>& accept_state,
-      bool custommization_mode) = 0;
+      bool customization_mode) = 0;
+
+  // Returns true if the view can accept a new Show() command to coalesce
+  // requests. Currently the policy is that this should return true if the view
+  // is being shown and the mouse is not over the view area (!IsMouseHovered).
+  virtual bool CanAcceptRequestUpdate() = 0;
 
   // Hides the permission bubble.
   virtual void Hide() = 0;
 };
 
 #endif  // CHROME_BROWSER_UI_WEBSITE_SETTINGS_PERMISSION_BUBBLE_VIEW_H_