Linux: move X operations from the IO to UI2 thread.

chrome/common/x11_util.cc

Index: chrome/common/x11_util.cc
diff --git a/chrome/common/x11_util.cc b/chrome/common/x11_util.cc
index d10c32079c766d10f16c2f12b5dcb47b7ce706fc..83fc02a8e4ee3a5e243ce517e490f98a3e3953b3 100644
--- a/chrome/common/x11_util.cc
+++ b/chrome/common/x11_util.cc
@@ -6,6 +6,7 @@
 // ported from XCB since we can't use XCB on Ubuntu while its 32-bit support
 // remains woefully incomplete.
 
+#include "base/thread.h"
 #include "chrome/common/x11_util.h"
 #include "chrome/common/x11_util_internal.h"
 
@@ -98,6 +99,10 @@ bool QueryRenderSupport(Display* dpy) {
   return render_supported;
 }
 
+int GetDefaultScreen(Display* display) {
+  return XDefaultScreen(display);
+}
+
 XID GetX11RootWindow() {
   return GDK_WINDOW_XID(gdk_get_default_root_window());
 }
@@ -106,6 +111,10 @@ XID GetX11WindowFromGtkWidget(GtkWidget* widget) {
   return GDK_WINDOW_XID(widget->window);
 }
 
+XID GetX11WindowFromGdkWindow(GdkWindow* window) {
+  return GDK_WINDOW_XID(window);
+}
+
 void* GetVisualFromGtkWidget(GtkWidget* widget) {
   return GDK_VISUAL_XVISUAL(gtk_widget_get_visual(widget));
 }
@@ -219,4 +228,25 @@ void FreePixmap(Display* display, XID pixmap) {
   XFreePixmap(display, pixmap);
 }
 
+// Called on BACKGROUND_X11 thread.
+Display* GetSecondaryDisplay() {
+  static Display* display = NULL;
+  if (!display) {
+    display = XOpenDisplay(NULL);
+    CHECK(display);
+  }
+
+  return display;
+}
+
+// Called on BACKGROUND_X11 thread.
+void GetWindowGeometry(int* x, int* y, unsigned* width, unsigned* height,
+                       XID window) {
+  Window root_window;
+  unsigned border_width, depth;
+
+  CHECK(XGetGeometry(GetSecondaryDisplay(), window,
+                     &root_window, x, y, width, height, &border_width, &depth));
+}
+
 }  // namespace x11_util