aura: Add X11 host window management.

ui/aura/root_window.h

Index: ui/aura/root_window.h
diff --git a/ui/aura/root_window.h b/ui/aura/root_window.h
index 54ad60773957bfcc16d13eb0f861204eefdfaedf..41b58375f1498c312faa83d779c3afca0cdfdd7d 100644
--- a/ui/aura/root_window.h
+++ b/ui/aura/root_window.h
@@ -139,6 +139,9 @@ class AURA_EXPORT RootWindow : public ui::CompositorDelegate,
   // Draw the whole screen.
   void ScheduleFullDraw();
 
+  // Handles a |native_event| event. Returns true if handled.
+  bool DispatchNativeEvent(const base::NativeEvent& native_event);
+
   // Handles a mouse event. Returns true if handled.
   bool DispatchMouseEvent(MouseEvent* event);
 
@@ -178,6 +181,9 @@ class AURA_EXPORT RootWindow : public ui::CompositorDelegate,
   // keycodes and keysyms) has changed.
   void OnKeyboardMappingChanged();
 
+  // Invoked when the cursor has changed.
+  void OnCursorChanged(ui::PlatformCursor cursor);
+
   // The system windowing system has sent a request that we close our window.
   void OnRootWindowHostClosed();
 
@@ -215,6 +221,9 @@ class AURA_EXPORT RootWindow : public ui::CompositorDelegate,
   // Returns the accelerated widget from the RootWindowHost.
   gfx::AcceleratedWidget GetAcceleratedWidget();
 
+  // Returns the accelerated widget used for events from the RootWindowHost.
+  gfx::AcceleratedWidget GetAcceleratedWidgetUsedForEvents();
+
   // Toggles the host's full screen state.
   void ToggleFullScreen();