Refactor screen/monitor so that gfx::Screen returns monitor object.

ash/screen_ash.cc

Index: ash/screen_ash.cc
diff --git a/ash/screen_ash.cc b/ash/screen_ash.cc
index ad679a15615b645dd62882635741f37f52b2bd96..f073eb30ba775d9724a9de4fdc253804636464d6 100644
--- a/ash/screen_ash.cc
+++ b/ash/screen_ash.cc
@@ -8,16 +8,13 @@
 #include "ash/wm/shelf_layout_manager.h"
 #include "base/logging.h"
 #include "ui/aura/env.h"
-#include "ui/aura/monitor.h"
+#include "ui/aura/monitor_aura.h"
 #include "ui/aura/monitor_manager.h"
 #include "ui/aura/root_window.h"
+#include "ui/gfx/screen.h"
 
 namespace ash {
 
-// TODO(oshima): For m19, the origin of work area/monitor bounds for
-// views/aura is (0,0) because it's simple and enough. Fix this when
-// real multi monitor support is implemented.
-
 namespace {
 aura::MonitorManager* GetMonitorManager() {
   return aura::Env::GetInstance()->monitor_manager();
@@ -41,45 +38,39 @@ gfx::Rect ScreenAsh::GetUnmaximizedWorkAreaBounds(aura::Window* window) {
   return Shell::GetInstance()->shelf()->GetUnmaximizedWorkAreaBounds(window);
 }
 
-gfx::Point ScreenAsh::GetCursorScreenPointImpl() {
+gfx::Point ScreenAsh::GetCursorScreenPoint() {
   return root_window_->last_mouse_location();
 }
 
-gfx::Rect ScreenAsh::GetMonitorWorkAreaNearestWindowImpl(
-    gfx::NativeWindow window) {
-  return GetMonitorManager()->GetMonitorNearestWindow(window)->
-      GetWorkAreaBounds();
+gfx::NativeWindow ScreenAsh::GetWindowAtCursorScreenPoint() {
+  const gfx::Point point = gfx::Screen::GetCursorScreenPoint();
+  return root_window_->GetTopWindowContainingPoint(point);
 }
 
-gfx::Rect ScreenAsh::GetMonitorAreaNearestWindowImpl(
-    gfx::NativeWindow window) {
-  // See the comment at the top.
-  return gfx::Rect(
-      GetMonitorManager()->GetMonitorNearestWindow(window)->size());
+int ScreenAsh::GetNumMonitors() {
+  return GetMonitorManager()->GetNumMonitors();
 }
 
-gfx::Rect ScreenAsh::GetMonitorWorkAreaNearestPointImpl(
-    const gfx::Point& point) {
-  return GetMonitorManager()->GetMonitorNearestPoint(point)->
-      GetWorkAreaBounds();
+const gfx::Monitor* ScreenAsh::GetMonitorNearestWindow(
+    gfx::NativeWindow window) {
+  return GetMonitorManager()->GetMonitorNearestWindow(window);
 }
 
-gfx::Rect ScreenAsh::GetMonitorAreaNearestPointImpl(const gfx::Point& point) {
-  // See the comment at the top.
-  return gfx::Rect(GetMonitorManager()->GetMonitorNearestPoint(point)->size());
+const gfx::Monitor* ScreenAsh::GetMonitorNearestPoint(
+    const gfx::Point& point) {
+  return GetMonitorManager()->GetMonitorNearestPoint(point);
 }
 
-gfx::NativeWindow ScreenAsh::GetWindowAtCursorScreenPointImpl() {
-  const gfx::Point point = GetCursorScreenPoint();
-  return root_window_->GetTopWindowContainingPoint(point);
+const gfx::Monitor* ScreenAsh::GetPrimaryMonitor() {
+  return GetMonitorManager()->GetMonitorAt(0);
 }
 
-gfx::Size ScreenAsh::GetPrimaryMonitorSizeImpl() {
-  return GetMonitorManager()->GetMonitorAt(0)->size();
+void ScreenAsh::AddMonitorObserver(gfx::MonitorObserver* observer) {
+  return GetMonitorManager()->AddObserver(observer);
 }
 
-int ScreenAsh::GetNumMonitorsImpl() {
-  return GetMonitorManager()->GetNumMonitors();
+void ScreenAsh::RemoveMonitorObserver(gfx::MonitorObserver* observer) {
+  return GetMonitorManager()->RemoveObserver(observer);
 }
 
 }  // namespace ash