Add context to gfx::Screen calls in support of simultaneous desktop+ash

ui/gfx/screen_android.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/gfx/screen.h"
 
 #include "base/logging.h"
 #include "ui/gfx/display.h"
 
 namespace gfx {
 
 // static
 bool Screen::IsDIPEnabled() {
   return false;
 }
 
 // static
-gfx::Display Screen::GetPrimaryDisplay() {
+gfx::Display Screen::GetPrimaryDisplay(gfx::NativeView context) {
   NOTIMPLEMENTED() << "crbug.com/117839 tracks implementation";
   return gfx::Display(0, gfx::Rect(0, 0, 1, 1));
 }
 
 // static
 gfx::Display Screen::GetDisplayNearestWindow(gfx::NativeView view) {
-  return GetPrimaryDisplay();
+  return GetPrimaryDisplay(view);
 }
 
 // static
-gfx::Display Screen::GetDisplayNearestPoint(const gfx::Point& point) {
-  return GetPrimaryDisplay();
+gfx::Display Screen::GetDisplayNearestPoint(
+    gfx::NativeView context, const gfx::Point& point) {
+  return GetPrimaryDisplay(context);
 }
 
-int Screen::GetNumDisplays() {
+int Screen::GetNumDisplays(gfx::NativeView context) {
   return 1;
 }
 
 }  // namespace gfx