Add some checks to ToolbarView to see what's NULL.
Add some checks to ToolbarView to see what's NULL.

BUG=none
TEST=none


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=78065
Review URL: http://codereview.chromium.org/6683045

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@78421 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser