Remove unused LauncherItemController::IsVisible()

chrome/browser/ui/ash/launcher/app_shortcut_launcher_item_controller.cc

Index: chrome/browser/ui/ash/launcher/app_shortcut_launcher_item_controller.cc
diff --git a/chrome/browser/ui/ash/launcher/app_shortcut_launcher_item_controller.cc b/chrome/browser/ui/ash/launcher/app_shortcut_launcher_item_controller.cc
index 8788a4506a06e41c4b7e3e6070ed55edf3329361..86b08fa8dee6c79e1b081e4389aa5aa216a8c67d 100644
--- a/chrome/browser/ui/ash/launcher/app_shortcut_launcher_item_controller.cc
+++ b/chrome/browser/ui/ash/launcher/app_shortcut_launcher_item_controller.cc
@@ -96,18 +96,6 @@ AppShortcutLauncherItemController::AppShortcutLauncherItemController(
 AppShortcutLauncherItemController::~AppShortcutLauncherItemController() {
 }
 
-bool AppShortcutLauncherItemController::IsVisible() const {
-  // Return true if any browser window associated with the app is visible.
-  std::vector<content::WebContents*> content =
-      chrome_launcher_controller_->GetV1ApplicationsFromAppId(app_id());
-  for (size_t i = 0; i < content.size(); i++) {
-    Browser* browser = chrome::FindBrowserWithWebContents(content[i]);
-    if (browser && browser->window()->GetNativeWindow()->IsVisible())
-      return true;
-  }
-  return false;
-}
-
 void AppShortcutLauncherItemController::Launch(ash::LaunchSource source,
                                                int event_flags) {
   // Launching an app replaces shortcut item controller to app controller. As