Set scale/orientation property to aura root window

ui/aura/root_window_host_linux.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/aura/root_window_host_linux.h"
 
 #include <strings.h>
 #include <X11/cursorfont.h>
 #include <X11/extensions/Xfixes.h>
 #include <X11/extensions/XInput2.h>
@@ skipping 816 matching lines @@
 }
 
 void RootWindowHostLinux::OnDeviceScaleFactorChanged(
     float device_scale_factor) {
 }
 
 void RootWindowHostLinux::PrepareForShutdown() {
   base::MessagePumpAuraX11::Current()->RemoveDispatcherForWindow(xwindow_);
 }
 
+void RootWindowHostLinux::SetIntProperty(const std::string& name, int value) {
+  ui::SetIntProperty(
+      xwindow_, name.c_str(), XGetAtomName(xdisplay_, XA_CARDINAL), value);

[Daniel Erat, 2013/01/30 23:52:46]

hmm, don't use XGetAtomName() here; it does a round trip to the server.  i think
that it's safe to use "CARDINAL"; this is a built-in atom in X.

[oshima, 2013/01/31 00:04:56]

Ah, sorry I misunderstood what you were asking. done.

That's being said, I believe this is arbitrary for custom
property right?
Other places are using the same value for name and type...

+}
+
 bool RootWindowHostLinux::DispatchEventForRootWindow(
     const base::NativeEvent& event) {
   switch (event->type) {
     case ConfigureNotify:
       DCHECK_EQ(x_root_window_, event->xconfigure.event);
       x_root_bounds_.SetRect(event->xconfigure.x, event->xconfigure.y,
           event->xconfigure.width, event->xconfigure.height);
       break;
 
     case GenericEvent:
@@ skipping 160 matching lines @@
   return new RootWindowHostLinux(bounds);
 }
 
 // static
 gfx::Size RootWindowHost::GetNativeScreenSize() {
   ::Display* xdisplay = base::MessagePumpAuraX11::GetDefaultXDisplay();
   return gfx::Size(DisplayWidth(xdisplay, 0), DisplayHeight(xdisplay, 0));
 }
 
 }  // namespace aura