Draggable region support for frameless app window on GTK.

chrome/browser/ui/gtk/extensions/shell_window_gtk.h

Index: chrome/browser/ui/gtk/extensions/shell_window_gtk.h
diff --git a/chrome/browser/ui/gtk/extensions/shell_window_gtk.h b/chrome/browser/ui/gtk/extensions/shell_window_gtk.h
index 56b6e235041d04051bc30bb3f34f00dd00a1beb8..0775939943a19cf8901d2f91ec372e9af67c236d 100644
--- a/chrome/browser/ui/gtk/extensions/shell_window_gtk.h
+++ b/chrome/browser/ui/gtk/extensions/shell_window_gtk.h
@@ -12,6 +12,7 @@
 #include "ui/base/gtk/gtk_signal.h"
 #include "ui/base/x/active_window_watcher_x_observer.h"
 #include "ui/gfx/rect.h"
+#include "ui/gfx/scoped_sk_region.h"
 
 class Profile;
 
@@ -59,12 +60,18 @@ class ShellWindowGtk : public ShellWindow,
 
   virtual ~ShellWindowGtk();
 
+  // content::WebContentsDelegate implementation.
+  virtual void UpdateDraggableRegions(
+      const std::vector<content::DraggableRegion>& regions) OVERRIDE;

[jeremya, 2012/08/08 04:38:37]

Technically this isn't content::WebContentsDelegate implementation :)

+
   CHROMEGTK_CALLBACK_1(ShellWindowGtk, gboolean, OnMainWindowDeleteEvent,
                        GdkEvent*);
   CHROMEGTK_CALLBACK_1(ShellWindowGtk, gboolean, OnConfigure,
                        GdkEventConfigure*);
   CHROMEGTK_CALLBACK_1(ShellWindowGtk, gboolean, OnWindowState,
                        GdkEventWindowState*);
+  CHROMEGTK_CALLBACK_1(ShellWindowGtk, gboolean, OnButtonPress,
+                       GdkEventButton*);
 
   GtkWindow* window_;
   GdkWindowState state_;
@@ -84,6 +91,9 @@ class ShellWindowGtk : public ShellWindow,
   // fullscreen, however: some WMs don't support fullscreen.
   bool content_thinks_its_fullscreen_;
 
+  gfx::ScopedSkRegion draggable_region_;

[Evan Stade, 2012/08/07 23:20:58]

I don't even know why this type exists. Why not just used scoped_ptr<SkRegion>?
Better yet use SkRegion.

+  bool frameless_;
+
   DISALLOW_COPY_AND_ASSIGN(ShellWindowGtk);
 };