InfoBarService inherits from InfoBarManager

chrome/browser/infobars/infobar_delegate.cc

Index: chrome/browser/infobars/infobar_delegate.cc
diff --git a/chrome/browser/infobars/infobar_delegate.cc b/chrome/browser/infobars/infobar_delegate.cc
index 5a6970758935c1eeae2e58a2472febcb53205db5..bdc0e36065a307121311270731b3324e3d18fc17 100644
--- a/chrome/browser/infobars/infobar_delegate.cc
+++ b/chrome/browser/infobars/infobar_delegate.cc
@@ -14,6 +14,17 @@
 #include "content/public/browser/web_contents.h"
 #include "ui/base/resource/resource_bundle.h"
 
+namespace {
+content::WebContents* WebContentsFromInfoBar(InfoBar* infobar) {

[droger, 2014/04/08 12:11:00]

The plan would be to make this helper function public so that any infobar
delegate that needs it can use it instead of InfoBarDelegate::web_contents().

+  if (!infobar || !infobar->owner())
+    return NULL;
+
+  InfoBarService* infobar_service =
+      static_cast<InfoBarService*>(infobar->owner());
+  return infobar_service->web_contents();
+}
+}  // namespace
+
 using content::NavigationEntry;
 
 // InfoBarDelegate ------------------------------------------------------------
@@ -108,8 +119,7 @@ gfx::Image InfoBarDelegate::GetIcon() const {
 }
 
 content::WebContents* InfoBarDelegate::web_contents() {
-  return (infobar_ && infobar_->owner()) ?
-      infobar_->owner()->web_contents() : NULL;
+  return WebContentsFromInfoBar(infobar_);
 }
 
 InfoBarDelegate::InfoBarDelegate() : contents_unique_id_(0) {