Update permission prompt icons

chrome/browser/ui/website_settings/permission_bubble_request.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_REQUEST_H_
 #define CHROME_BROWSER_UI_WEBSITE_SETTINGS_PERMISSION_BUBBLE_REQUEST_H_
 
 #include "base/strings/string16.h"
 #include "url/gurl.h"
 
 // Describes the interface a feature utilizing permission bubbles should
 // implement. A class of this type is registered with the permission bubble
 // manager to receive updates about the result of the permissions request
 // from the bubble. It should live until it is unregistered or until
 // RequestFinished is called.
 // Note that no particular guarantees are made about what exact UI surface
 // is presented to the user. The delegate may be coalesced with other bubble
 // requests, or depending on the situation, not shown at all.
 class PermissionBubbleRequest {
  public:
   virtual ~PermissionBubbleRequest() {}
 
   // The icon to use next to the message text fragment in the permission bubble.
-  // Must be a valid icon of size 16x16. (TODO(gbillock): tbd size)
+  // Must be a valid icon of size 18x18.
   virtual int GetIconID() const = 0;
 
   // Returns the full prompt text for this permission. This is the only text
   // that will be shown in the single-permission case and should be phrased
   // positively as a complete sentence.
   virtual base::string16 GetMessageText() const = 0;
 
   // Returns the shortened prompt text for this permission.  Must be phrased
   // as a heading, e.g. "Location", or "Camera". The permission bubble may
   // coalesce different requests, and if it does, this text will be displayed
@@ skipping 20 matching lines @@
   virtual void Cancelled() = 0;
 
   // The bubble this request was associated with was answered by the user.
   // It is safe for the request to be deleted at this point -- it will receive
   // no further message from the permission bubble system. This method will
   // eventually be called on every request which is not unregistered.
   virtual void RequestFinished() = 0;
 };
 
 #endif  // CHROME_BROWSER_UI_WEBSITE_SETTINGS_PERMISSION_BUBBLE_REQUEST_H_