Move infobar handling to a tab helper.

chrome/browser/extensions/extension_install_ui_browsertest.cc

Index: chrome/browser/extensions/extension_install_ui_browsertest.cc
diff --git a/chrome/browser/extensions/extension_install_ui_browsertest.cc b/chrome/browser/extensions/extension_install_ui_browsertest.cc
index 23ddbb73a366fdc54ae9533ea580bbe83372c8a9..1ac2196287bf3e55e597e2372883a7d7211586a1 100644
--- a/chrome/browser/extensions/extension_install_ui_browsertest.cc
+++ b/chrome/browser/extensions/extension_install_ui_browsertest.cc
@@ -6,6 +6,7 @@
 #include "chrome/browser/extensions/extension_browsertest.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/theme_installed_infobar_delegate.h"
+#include "chrome/browser/infobars/infobar_tab_helper.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
@@ -20,12 +21,13 @@ class ExtensionInstallUIBrowserTest : public ExtensionBrowserTest {
   void VerifyThemeInfoBarAndUndoInstall() {
     TabContentsWrapper* tab = browser()->GetSelectedTabContentsWrapper();
     ASSERT_TRUE(tab);
-    ASSERT_EQ(1U, tab->infobar_count());
-    ConfirmInfoBarDelegate* delegate =
-        tab->GetInfoBarDelegateAt(0)->AsConfirmInfoBarDelegate();
+    InfoBarTabHelper* infobar_helper = tab->infobar_tab_helper();
+    ASSERT_EQ(1U, infobar_helper->infobar_count());
+    ConfirmInfoBarDelegate* delegate = infobar_helper->
+        GetInfoBarDelegateAt(0)->AsConfirmInfoBarDelegate();
     ASSERT_TRUE(delegate);
     delegate->Cancel();
-    ASSERT_EQ(0U, tab->infobar_count());
+    ASSERT_EQ(0U, infobar_helper->infobar_count());
   }
 
   const Extension* GetTheme() const {