linux: use some more GDK_ cursor constants for panning cursors
linux: use some more GDK_ cursor constants for panning cursors

These aren't the greatest, but I don't think there are better options.

Review URL: http://codereview.chromium.org/2931011

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@52386 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