Implement chrome.brailleDisplayPrivate API

ui/aura/root_window_host_x11.cc

Index: ui/aura/root_window_host_x11.cc
diff --git a/ui/aura/root_window_host_x11.cc b/ui/aura/root_window_host_x11.cc
index f69a54a889895c4b1f543a3c6be001f3f73880fd..a208c66f6a16fc332098e15767b3694a449a11d7 100644
--- a/ui/aura/root_window_host_x11.cc
+++ b/ui/aura/root_window_host_x11.cc
@@ -25,6 +25,8 @@
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
+// TODO(plundblad): Need something better than this dependency.
+#include "chrome/browser/extensions/api/braille_private/braille_controller.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "third_party/skia/include/core/SkCanvas.h"
 #include "third_party/skia/include/core/SkPostConfig.h"
@@ -48,6 +50,7 @@
 #include "ui/gfx/codec/png_codec.h"
 #include "ui/gfx/screen.h"
 
+
 #if defined(OS_CHROMEOS)
 #include "base/chromeos/chromeos_version.h"
 #endif
@@ -439,6 +442,9 @@ RootWindowHostX11::RootWindowHostX11(const gfx::Rect& bounds)
   XRRSelectInput(xdisplay_, x_root_window_,
                  RRScreenChangeNotifyMask | RROutputChangeNotifyMask);
   Env::GetInstance()->AddObserver(this);
+  // TODO: This is not needed on chromeos, but it is currently on
+  // Linux.  Need a better way to handle this.
+  extensions::api::braille_private::BrailleController::AddWindow(xwindow_);
 }
 
 RootWindowHostX11::~RootWindowHostX11() {
@@ -449,6 +455,7 @@ RootWindowHostX11::~RootWindowHostX11() {
   UnConfineCursor();
 
   XDestroyWindow(xdisplay_, xwindow_);
+  extensions::api::braille_private::BrailleController::RemoveWindow(xwindow_);
 }
 
 bool RootWindowHostX11::Dispatch(const base::NativeEvent& event) {