Fix a ChromeFrame Back Forward navigation issue which occurs when we modify t...

Fix a ChromeFrame Back Forward navigation issue which occurs when we modify the IE history
while processing a navigation update received for a tab loading state change. This is incorrectly
treated as an internal navigation which messes up the history.

Fix is to not treat the tab loading state change notification as an internal navigation.

Fixes bug http://code.google.com/p/chromium/issues/detail?id=69096

BUG=69096
TEST=None at this point.


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=71524

[amit, 2011-01-14 22:42:09]

lgtm