Add suport for changing cursors

Win8 Aura :add suport for changing cursors

To change the cursor we need to send a message from
the browser to the viewer with the right HCURSOR. Since the
cursors are a GDI shared resource, we can call ::LoadCursor
in the browser and ::SetCursor in the viewer.

BUG=151718
TEST= moving pointer to a chrome window edge changes cursor to resize cursor
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=172265

[cpu_(ooo_6.6-7.5), 2012-12-08 01:55:53]

ben, please review :	 ui/aura/remote_root_window_host_win.cc

ananta: the rest.

[ananta, 2012-12-11 00:17:30]

lgtm

https://codereview.chromium.org/11446078/diff/5001/win8/metro_driver/chrome_a...
File win8/metro_driver/chrome_app_view_ash.cc (right):

https://codereview.chromium.org/11446078/diff/5001/win8/metro_driver/chrome_a...
win8/metro_driver/chrome_app_view_ash.cc:365: ::SetCursor(HCURSOR(cursor));
replace with cursor

[cpu_(ooo_6.6-7.5), 2012-12-11 01:21:37]

cdn, please review metro_viewer_messages.h

[Ben Goodger (Google), 2012-12-11 01:23:16]

lgtm

how do we do custom cursors?

[cpu_(ooo_6.6-7.5), 2012-12-11 04:31:34]

Not sure, I need to test, the theory indicates that this change works for them
as well because cursors are a user32 resource and as such they are global for
the session (as in windowstation) but stranger things I've seen.

[Cris Neckar, 2012-12-11 18:39:00]

lgtm

[sadrul, 2012-12-11 18:41:33]

On 2012/12/11 01:23:16, Ben Goodger (Google) wrote:
> lgtm
> 
> how do we do custom cursors?

There are a couple of TODOs in webkit/glue/webcursor_aurawin.cc that will need
to be addressed for custom web-cursors, I believe.