Implement the webNavigation.onCommitted event.

chrome/browser/tab_contents/navigation_controller.cc

Index: chrome/browser/tab_contents/navigation_controller.cc
diff --git a/chrome/browser/tab_contents/navigation_controller.cc b/chrome/browser/tab_contents/navigation_controller.cc
index a416bc954ce884314eb14e5470119ab29203baf3..0aa86f2534b2b3dbd4cdc7234c7472d707c4d929 100644
--- a/chrome/browser/tab_contents/navigation_controller.cc
+++ b/chrome/browser/tab_contents/navigation_controller.cc
@@ -352,6 +352,9 @@ void NavigationController::GoBack() {
   DiscardNonCommittedEntries();
 
   pending_entry_index_ = current_index - 1;
+  entries_[pending_entry_index_]->set_transition_type(
+      entries_[pending_entry_index_]->transition_type() |
+      PageTransition::FORWARD_BACK);
   NavigateToPendingEntry(NO_RELOAD);
 }
 
@@ -382,6 +385,9 @@ void NavigationController::GoForward() {
   if (!transient)
     pending_entry_index_++;
 
+  entries_[pending_entry_index_]->set_transition_type(
+      entries_[pending_entry_index_]->transition_type() |
+      PageTransition::FORWARD_BACK);
   NavigateToPendingEntry(NO_RELOAD);
 }
 
@@ -420,6 +426,9 @@ void NavigationController::GoToIndex(int index) {
   DiscardNonCommittedEntries();
 
   pending_entry_index_ = index;
+  entries_[pending_entry_index_]->set_transition_type(
+      entries_[pending_entry_index_]->transition_type() |
+      PageTransition::FORWARD_BACK);
   NavigateToPendingEntry(NO_RELOAD);
 }