Eliminate dependence of GoogleURLTracker et al. on InfoBarService

chrome/browser/google/google_url_tracker_navigation_helper_impl.cc

Index: chrome/browser/google/google_url_tracker_navigation_helper_impl.cc
diff --git a/chrome/browser/google/google_url_tracker_navigation_helper_impl.cc b/chrome/browser/google/google_url_tracker_navigation_helper_impl.cc
index 99420a86efaefc5bb10493f1cbcc5249767f0994..29bfd58302decb8c291c19d69ccf656e7e229e69 100644
--- a/chrome/browser/google/google_url_tracker_navigation_helper_impl.cc
+++ b/chrome/browser/google/google_url_tracker_navigation_helper_impl.cc
@@ -20,6 +20,7 @@ GoogleURLTrackerNavigationHelperImpl::GoogleURLTrackerNavigationHelperImpl(
 }
 
 GoogleURLTrackerNavigationHelperImpl::~GoogleURLTrackerNavigationHelperImpl() {
+  web_contents_ = NULL;
 }
 
 void GoogleURLTrackerNavigationHelperImpl::SetListeningForNavigationCommit(
@@ -67,6 +68,16 @@ bool GoogleURLTrackerNavigationHelperImpl::IsListeningForTabDestruction() {
       content::Source<content::WebContents>(web_contents_));
 }
 
+void GoogleURLTrackerNavigationHelperImpl::OpenURL(
+    GURL url,
+    WindowOpenDisposition disposition,
+    bool user_clicked_on_link) {
+  content::PageTransition transition_type = user_clicked_on_link ?
+      content::PAGE_TRANSITION_LINK : content::PAGE_TRANSITION_GENERATED;
+  web_contents_->OpenURL(content::OpenURLParams(
+      url, content::Referrer(), disposition, transition_type, false));
+}
+
 void GoogleURLTrackerNavigationHelperImpl::Observe(
     int type,
     const content::NotificationSource& source,