Refactor Windows DPI Point, Rect, and Size for Multiple Monitor DPI Awareness

ui/gfx/screen.h

Index: ui/gfx/screen.h
diff --git a/ui/gfx/screen.h b/ui/gfx/screen.h
index 107ee44e2431e1d4a42f2b4b5cad5ac9093ed462..cf6e558f89821740d3ae25ea00726da0f372d19c 100644
--- a/ui/gfx/screen.h
+++ b/ui/gfx/screen.h
@@ -91,6 +91,16 @@ class GFX_EXPORT Screen {
   virtual void AddObserver(DisplayObserver* observer) = 0;
   virtual void RemoveObserver(DisplayObserver* observer) = 0;
 
+  // Converts |screen_rect| to DIP coordinates in the context of view. If |view|
+  // is null, the primary display is used as the context.
+  virtual gfx::Rect ScreenToDIPRectInWindow(NativeView view,
+                                            const gfx::Rect& screen_rect) const;
+
+  // Converts |dip_rect| to screen coordinates in the context of view. If |view|
+  // is null, the primary display is used as the context.
+  virtual gfx::Rect DIPToScreenRectInWindow(NativeView view,
+                                            const gfx::Rect& dip_rect) const;
+
  private:
   DISALLOW_COPY_AND_ASSIGN(Screen);
 };