aura: Implement app list M19 mock.

ash/app_list/app_list.cc

Index: ash/app_list/app_list.cc
diff --git a/ash/app_list/app_list.cc b/ash/app_list/app_list.cc
index d9e30d1f63b203514e4c8892a898f5832ae13efb..edecd3f9ebde47bd231ea5afad0e90e2a0a8d8f5 100644
--- a/ash/app_list/app_list.cc
+++ b/ash/app_list/app_list.cc
@@ -4,7 +4,6 @@
 
 #include "ash/app_list/app_list.h"
 
-#include "ash/app_list/app_list_model.h"
 #include "ash/app_list/app_list_view.h"
 #include "ash/ash_switches.h"
 #include "ash/shell_delegate.h"
@@ -22,19 +21,10 @@ namespace internal {
 
 namespace {
 
-// Gets preferred bounds of app list window in show/hide state.
-gfx::Rect GetPreferredBounds(bool show) {
-  // The y-axis offset used at the beginning of showing animation.
-  static const int kMoveUpAnimationOffset = 50;
-
+// Gets preferred bounds of app list window.
+gfx::Rect GetPreferredBounds() {
   gfx::Point cursor = gfx::Screen::GetCursorScreenPoint();
-  gfx::Rect work_area = gfx::Screen::GetMonitorWorkAreaNearestPoint(cursor);
-  gfx::Rect widget_bounds(work_area);
-  widget_bounds.Inset(100, 100);
-  if (!show)
-    widget_bounds.Offset(0, kMoveUpAnimationOffset);
-
-  return widget_bounds;
+  return gfx::Screen::GetMonitorAreaNearestPoint(cursor);
 }
 
 ui::Layer* GetLayer(views::Widget* widget) {
@@ -62,15 +52,11 @@ void AppList::SetVisible(bool visible) {
   if (widget_) {
     ScheduleAnimation();
   } else if (is_visible_) {
-    scoped_ptr<AppListModel> model(new AppListModel);
-    Shell::GetInstance()->delegate()->BuildAppListModel(model.get());
-
     // AppListModel and AppListViewDelegate are owned by AppListView. They
     // will be released with AppListView on close.
     AppListView* app_list_view = new AppListView(
-        model.release(),
         Shell::GetInstance()->delegate()->CreateAppListViewDelegate(),
-        GetPreferredBounds(false));
+        GetPreferredBounds());
     SetWidget(app_list_view->GetWidget());
   }
 }
@@ -90,11 +76,11 @@ void AppList::SetWidget(views::Widget* widget) {
     widget_->AddObserver(this);
     Shell::GetInstance()->AddRootWindowEventFilter(this);
 
-    widget_->SetBounds(GetPreferredBounds(false));
     widget_->SetOpacity(0);
     ScheduleAnimation();
 
     widget_->Show();
+    widget_->Activate();
   } else {
     widget->Close();
   }
@@ -124,7 +110,6 @@ void AppList::ScheduleAnimation() {
 
   ui::ScopedLayerAnimationSettings app_list_animation(layer->GetAnimator());
   app_list_animation.AddObserver(this);
-  layer->SetBounds(GetPreferredBounds(is_visible_));
   layer->SetOpacity(is_visible_ ? 1.0 : 0.0);
 
   ui::Layer* default_container_layer = default_container->layer();