[InfoBar] Add InfoBarDelegate::GetIconID()

chrome/browser/infobars/infobar_delegate.h

Index: chrome/browser/infobars/infobar_delegate.h
diff --git a/chrome/browser/infobars/infobar_delegate.h b/chrome/browser/infobars/infobar_delegate.h
index 1fb7d632a9d9b1197125bcdeefbc3e1bd00099e3..2401c537616b62e136a7faef99b1373958e917ee 100644
--- a/chrome/browser/infobars/infobar_delegate.h
+++ b/chrome/browser/infobars/infobar_delegate.h
@@ -78,9 +78,9 @@ class InfoBarDelegate {
   // Called when the user clicks on the close button to dismiss the infobar.
   virtual void InfoBarDismissed();
 
-  // Return the icon to be shown for this InfoBar. If the returned Image is
-  // NULL, no icon is shown.
-  virtual gfx::Image* GetIcon() const;
+  // Return the resource ID of the icon to be shown for this InfoBar.  If the
+  // value is equal to |kNoIconID|, no icon is shown.
+  virtual int GetIconID() const;
 
   // Returns the type of the infobar.  The type determines the appearance (such
   // as background color) of the infobar.
@@ -99,6 +99,13 @@ class InfoBarDelegate {
   virtual ThreeDAPIInfoBarDelegate* AsThreeDAPIInfoBarDelegate();
   virtual TranslateInfoBarDelegate* AsTranslateInfoBarDelegate();
 
+  // Value to use when the InfoBar has no icon to show.
+  static const int kNoIconID = 0;

[sky, 2013/05/15 20:47:06]

nit: constants should be above destructor.

[gone, 2013/05/15 21:43:00]

Done.

+
+  // Return the icon to be shown for this InfoBar. If the returned Image is
+  // empty, no icon is shown.
+  gfx::Image GetIcon() const;
+
   content::WebContents* web_contents() {
     return owner_ ? owner_->web_contents() : NULL;
   }