Commit instant loader when the instant page navigates away from instant URL.

chrome/browser/instant/instant_tab.cc

Index: chrome/browser/instant/instant_tab.cc
diff --git a/chrome/browser/instant/instant_tab.cc b/chrome/browser/instant/instant_tab.cc
index 302dba923d868508f2bd59f430376453ee571a2b..82870cfd437e622566799c8c062080e6afef4cd9 100644
--- a/chrome/browser/instant/instant_tab.cc
+++ b/chrome/browser/instant/instant_tab.cc
@@ -83,3 +83,7 @@ void InstantTab::StopCapturingKeyStrokes() {
 void InstantTab::RenderViewGone() {
   // For a commit page, a crash should not be handled differently.
 }
+
+void InstantTab::AboutToNavigateMainFrame(const GURL& url) {
+  // The client is a committed tab, navigations will happen as expected.
+}