Removes grab input window and extra grab and ungrab in X11WholeScreenMoveLoop

ui/views/widget/desktop_aura/desktop_drag_drop_client_aurax11.h

Index: ui/views/widget/desktop_aura/desktop_drag_drop_client_aurax11.h
diff --git a/ui/views/widget/desktop_aura/desktop_drag_drop_client_aurax11.h b/ui/views/widget/desktop_aura/desktop_drag_drop_client_aurax11.h
index 30f3aa022e17c6de4583a5273dffd4c6fba8fcba..ba40cde64305bf49c345233a9fd33e6f5c55b437 100644
--- a/ui/views/widget/desktop_aura/desktop_drag_drop_client_aurax11.h
+++ b/ui/views/widget/desktop_aura/desktop_drag_drop_client_aurax11.h
@@ -16,6 +16,7 @@
 #include "ui/base/cursor/cursor.h"
 #include "ui/base/dragdrop/drag_drop_types.h"
 #include "ui/gfx/point.h"
+#include "ui/gfx/rect.h"
 #include "ui/gfx/x/x11_atom_cache.h"
 #include "ui/views/views_export.h"
 #include "ui/views/widget/desktop_aura/x11_whole_screen_move_loop.h"
@@ -42,6 +43,7 @@ class SelectionFormatMap;
 
 namespace views {
 class DesktopNativeCursorManager;
+class Widget;
 
 // Implements drag and drop on X11 for aura. On one side, this class takes raw
 // X11 events forwarded from DesktopWindowTreeHostLinux, while on the other, it
@@ -164,6 +166,9 @@ class VIEWS_EXPORT DesktopDragDropClientAuraX11
   // server.
   ui::SelectionFormatMap GetFormatMap() const;
 
+  // Updates the cursor by re-grabbing the pointer while in the move loop.
+  void UpdateCursor();
+
   // Handling XdndPosition can be paused while waiting for more data; this is
   // called either synchronously from OnXdndPosition, or asynchronously after
   // we've received data requested from the other window.
@@ -177,6 +182,12 @@ class VIEWS_EXPORT DesktopDragDropClientAuraX11
                         unsigned long event_time);
   void SendXdndDrop(::Window dest_window);
 
+  // Sets an image to be used during the drag.
+  void SetDragImage(const gfx::ImageSkia& image, const gfx::Vector2dF& offset);
+
+  // Creates a window to show the drag image during the drag.
+  void CreateDragImageWindow();
+
   // A nested message loop that notifies this object of events through the
   // X11WholeScreenMoveLoopDelegate interface.
   X11WholeScreenMoveLoop move_loop_;
@@ -252,6 +263,15 @@ class VIEWS_EXPORT DesktopDragDropClientAuraX11
   gfx::NativeCursor copy_grab_cursor_;
   gfx::NativeCursor move_grab_cursor_;
 
+  // A Widget is created during the drag.
+  scoped_ptr<Widget> drag_widget_;
+  gfx::ImageSkia drag_image_;
+  gfx::Vector2dF drag_offset_;
+
+  // Drag widget is positioned off screen when drag image is not set or is
+  // completely transparent.
+  gfx::Rect null_drag_widget_bounds_;
+
   base::WeakPtrFactory<DesktopDragDropClientAuraX11> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DesktopDragDropClientAuraX11);