Wires keeping the launcher up to date with the browser.

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 43a6d00ac923500ad375018ffeb3ceee00c7012f..5f4502e896c73d575a8667f9e89014303c75ac31 100644
--- a/ui/aura_shell/launcher/launcher_model.cc
+++ b/ui/aura_shell/launcher/launcher_model.cc
@@ -4,6 +4,7 @@
 
 #include "ui/aura_shell/launcher/launcher_model.h"
 
+#include "ui/aura/window.h"
 #include "ui/aura_shell/launcher/launcher_model_observer.h"
 
 namespace aura_shell {
@@ -45,6 +46,21 @@ void LauncherModel::SetAppImage(int index, const SkBitmap& image) {
                     LauncherItemImagesChanged(index));
 }
 
+int LauncherModel::ItemIndexByWindow(aura::Window* window) {
+  LauncherItems::const_iterator i = ItemByWindow(window);
+  return i == items_.end() ? -1 : static_cast<int>((i - items_.begin()));
+}
+
+LauncherItems::const_iterator LauncherModel::ItemByWindow(
+    aura::Window* window) const {
+  for (LauncherItems::const_iterator i = items_.begin();
+       i != items_.end(); ++i) {
+    if (i->window == window)
+      return i;
+  }
+  return items_.end();
+}
+
 void LauncherModel::AddObserver(LauncherModelObserver* observer) {
   observers_.AddObserver(observer);
 }