Positions the launcher in the bottom left corner. Adds ShellDelegate

ui/aura_shell/launcher/launcher_model.cc

Index: ui/aura_shell/launcher/launcher_model.cc
diff --git a/ui/aura_shell/launcher/launcher_model.cc b/ui/aura_shell/launcher/launcher_model.cc
index 58ab9d36e8688cfc2e1f54d99d8a259abf983a38..f51fab1b2061362bf01976945f98b71958fb28b7 100644
--- a/ui/aura_shell/launcher/launcher_model.cc
+++ b/ui/aura_shell/launcher/launcher_model.cc
@@ -5,36 +5,28 @@
 #include "ui/aura_shell/launcher/launcher_model.h"
 
 #include "ui/aura_shell/launcher/launcher_model_observer.h"
-#include "views/view.h"
 
 namespace aura_shell {
 
-LauncherModel::LauncherModel() : selected_index_(-1) {
+// static
+LauncherModel* LauncherModel::instance_ = NULL;
+
+LauncherModel::LauncherModel() {
+  instance_ = this;
 }
 
 LauncherModel::~LauncherModel() {
-  for (Items::iterator i = items_.begin(); i != items_.end(); ++i) {
-    delete i->view;
-    i->view = NULL;
-  }
+  if (instance_ == this)
+    instance_ = NULL;
 }
 
-void LauncherModel::AddItem(views::View* view, int index, bool draggable) {
+void LauncherModel::Add(int index, const LauncherItem& item) {
   DCHECK(index >= 0 && index <= item_count());
-  Item item;
-  item.view = view;
-  item.draggable = draggable;
   items_.insert(items_.begin() + index, item);
   FOR_EACH_OBSERVER(LauncherModelObserver, observers_,
                     LauncherItemAdded(index));
 }
 
-void LauncherModel::RemoveItem(views::View* view) {
-  int index = IndexOfItemByView(view);
-  if (index != -1)
-    RemoveItemAt(index);
-}
-
 void LauncherModel::RemoveItemAt(int index) {
   DCHECK(index >= 0 && index < item_count());
   items_.erase(items_.begin() + index);
@@ -42,22 +34,21 @@ void LauncherModel::RemoveItemAt(int index) {
                     LauncherItemRemoved(index));
 }
 
-void LauncherModel::SetSelectedIndex(int index) {
-  if (index == selected_index_)
-    return;
-  DCHECK(selected_index_ == -1 ||
-         (selected_index_ >= 0 && selected_index_ < item_count()));
-  selected_index_ = index;
+void LauncherModel::SetTabbedImages(int index,
+                                    const LauncherTabbedImages& images) {
+  DCHECK(index >= 0 && index < item_count());
+  DCHECK_EQ(TYPE_TABBED, items_[index].type);
+  items_[index].tab_images = images;
   FOR_EACH_OBSERVER(LauncherModelObserver, observers_,
-                    LauncherSelectionChanged());
+                    LauncherItemImagesChanged(index));
 }
 
-int LauncherModel::IndexOfItemByView(views::View* view) {
-  for (Items::const_iterator i = items_.begin(); i != items_.end(); ++i) {
-    if (i->view == view)
-      return i - items_.begin();
-  }
-  return -1;
+void LauncherModel::SetAppImage(int index, const SkBitmap& image) {
+  DCHECK(index >= 0 && index < item_count());
+  DCHECK_EQ(TYPE_APP, items_[index].type);
+  items_[index].app_image = image;
+  FOR_EACH_OBSERVER(LauncherModelObserver, observers_,
+                    LauncherItemImagesChanged(index));
 }
 
 void LauncherModel::AddObserver(LauncherModelObserver* observer) {