Reland "Add display::GetDisplayNearestView"

ui/display/screen.h

Index: ui/display/screen.h
diff --git a/ui/display/screen.h b/ui/display/screen.h
index 3bff5bdb6406f2bb5256fb552cb8642c5951b2dd..b49a3ff4dfec6a878a5e5bdb608b9ed7725a0947 100644
--- a/ui/display/screen.h
+++ b/ui/display/screen.h
@@ -58,7 +58,12 @@ class DISPLAY_EXPORT Screen {
   // Returns the display nearest the specified window.
   // If the window is NULL or the window is not rooted to a display this will
   // return the primary display.
-  virtual Display GetDisplayNearestWindow(gfx::NativeView view) const = 0;
+  virtual Display GetDisplayNearestWindow(gfx::NativeWindow window) const = 0;
+
+  // Returns the display nearest the specified view. It may still use the window
+  // that contains the view (i.e. if a window is spread over two displays,
+  // the location of the view within that window won't influence the result).
+  virtual Display GetDisplayNearestView(gfx::NativeView view) const;
 
   // Returns the display nearest the specified point. |point| should be in DIPs.
   virtual Display GetDisplayNearestPoint(const gfx::Point& point) const = 0;
@@ -91,6 +96,8 @@ class DISPLAY_EXPORT Screen {
   bool GetDisplayWithDisplayId(int64_t display_id, Display* display) const;
 
  private:
+  static gfx::NativeWindow GetWindowForView(gfx::NativeView view);
+
   DISALLOW_COPY_AND_ASSIGN(Screen);
 };