GTK: Seal up GSEALs, focusing on GtkSelectionData.

GTK: Seal up GSEALs, focusing on GtkSelectionData.

BUG=79722
TEST=compiles
First Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=116956

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=117070

[Elliot Glaysher, 2012-01-09 19:19:56]

jhawkins: more porting work. sigh.

[James Hawkins, 2012-01-09 19:26:34]

lgtm

[commit-bot: I haz the power, 2012-01-09 19:27:16]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/erg@chromium.org/9151007/1

[commit-bot: I haz the power, 2012-01-09 19:27:30]

Presubmit check for 9151007-1 failed and returned exit status 1.

Running presubmit commit checks ...

** Presubmit Messages **
You might be calling functions intended only for testing from
production code.  It is OK to ignore this warning if you know what
you are doing, as the heuristics used to detect the situation are
not perfect.  The commit queue will not block on this warning.
Email joi@chromium.org if you have questions.
  ui/base/x/x11_util.cc:923
    void InitXKeyEventForTesting(EventType type,

** Presubmit ERRORS **
Missing LGTM from an OWNER for:
content/browser/tab_contents/web_drag_source_gtk.cc,ui/gfx/screen_gtk.cc,ui/base/clipboard/clipboard_gtk.cc,content/browser/renderer_host/gtk_im_context_wrapper.cc,content/browser/tab_contents/web_drag_dest_gtk.cc,ui/base/x/x11_util.cc,ui/gfx/gtk_native_view_id_manager.cc,ui/gfx/gtk_preserve_window.cc,ui/base/dragdrop/gtk_dnd_util.cc

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[Elliot Glaysher, 2012-01-09 19:28:28]

+jam: content/ stamp
+sky: ui/ stamp

[jam, 2012-01-09 21:52:01]

rubberstamp lgtm for content

[sky, 2012-01-09 22:20:00]

LGTM

[commit-bot: I haz the power, 2012-01-09 22:33:00]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/erg@chromium.org/9151007/1

[commit-bot: I haz the power, 2012-01-09 23:51:52]

Change committed as 116956

[Elliot Glaysher, 2012-01-10 02:16:00]

+thestig: This fixes up the reverted patch so we add gtk_widget_style_attach()
to gtk_compat.h. That's the only change.

I've done an official build locally with the shlibdeps trick to verify that this
only requires 2.18.

[Lei Zhang, 2012-01-10 02:28:19]

LGTM

[commit-bot: I haz the power, 2012-01-10 17:30:49]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/erg@chromium.org/9151007/12001

[commit-bot: I haz the power, 2012-01-10 19:12:57]

Change committed as 117070