Linux: Autodetect whether the custom frame should be used.

Listing a bunch of strings from WMs' source sucks,
but I can't think of any way to detect tiling WMs that
don't support the EWMH (see the bug and the comment in
this CL), so this seems safer.

Tested with the following:
- wiped out related prefs and started chrome under ion3;
  custom frame not used
- quit and started under metacity; custom frame *was* used
- toggled custom frame pref off and restarted under
  metacity again; custom frame not used
- toggled it back on and restarted under ion3; custom frame
  was used

BUG=15861
TEST=see above

Review URL: http://codereview.chromium.org/160374

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@22193 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 5 insertions, 0 deletions

diff --git a/chrome/common/x11_util.h b/chrome/common/x11_util.h
index 7ff4097..d9bcbb5 100644
--- a/chrome/common/x11_util.h
+++ b/chrome/common/x11_util.h
@@ -59,6 +59,11 @@ int BitsPerPixelForPixmapDepth(Display* display, int depth);
 bool IsWindowVisible(XID window);
 // Returns the bounds of |window|.
 bool GetWindowRect(XID window, gfx::Rect* rect);
+// Get the value of an int or string property.  On success, true is returned and
+// the value is stored in |value|.
+bool GetIntProperty(XID window, const std::string& property_name, int* value);
+bool GetStringProperty(
+    XID window, const std::string& property_name, std::string* value);
 
 // Implementers of this interface receive a notification for every X window of
 // the main display.