[Ozone] Constrain the cursor when overscan insets are set

ui/platform_window/platform_window.h

Index: ui/platform_window/platform_window.h
diff --git a/ui/platform_window/platform_window.h b/ui/platform_window/platform_window.h
index d5f5750e213f52de0581fdadf4aecb63c77545f6..915c8da4f6e65a54905f9f436eefec2bd9624415 100644
--- a/ui/platform_window/platform_window.h
+++ b/ui/platform_window/platform_window.h
@@ -43,6 +43,7 @@ class PlatformWindow {
 
   virtual void SetCursor(PlatformCursor cursor) = 0;

[pkotwicz, 2015/01/23 03:40:27]

We should have a comment about the coordinates of MoveCursorTo() and
ConfineCursorToBounds(). What's the name for the coordinate system? Host
coordinates?

[spang, 2015/01/23 18:18:40]

Could call them "platform window coordinates". "Host" coordinates only means
something in aura and above, but this is below.

   virtual void MoveCursorTo(const gfx::Point& location) = 0;
+  virtual void ConfineCursorToBounds(const gfx::Rect& bounds) = 0;
 };
 
 }  // namespace ui