Make the App Info Dialog appear modal

chrome/browser/ui/app_list/app_list_controller_delegate.cc

Index: chrome/browser/ui/app_list/app_list_controller_delegate.cc
diff --git a/chrome/browser/ui/app_list/app_list_controller_delegate.cc b/chrome/browser/ui/app_list/app_list_controller_delegate.cc
index 18daa5a7deaed9896711c70e3cff109fbf09c2f2..1c73cd1a630bd71937b4fc154e7d96afccb250b8 100644
--- a/chrome/browser/ui/app_list/app_list_controller_delegate.cc
+++ b/chrome/browser/ui/app_list/app_list_controller_delegate.cc
@@ -99,9 +99,24 @@ void AppListControllerDelegate::DoShowAppInfoFlow(
   if (!parent_window)
     return;
 
+  // The dialog is inset so the app list is still visible around the edges.
+  unsigned int kAppListDialogHorizontalBorderInsets = 10;
+  unsigned int kAppListDialogVerticalBorderInsets = 10;
+
+  // If we are using the experimental app list, inset the dialog further so it
+  // appears as a vertical column in the center of the app list.
+  if (app_list::switches::IsExperimentalAppListEnabled()) {
+    kAppListDialogHorizontalBorderInsets += 100;
+  }
+
+  gfx::Rect dialog_bounds = GetAppListBounds();
+  dialog_bounds.Inset(kAppListDialogHorizontalBorderInsets,
+                      kAppListDialogVerticalBorderInsets);
+
   OnShowExtensionPrompt();
   ShowAppInfoDialog(
       parent_window,
+      dialog_bounds,
       profile,
       extension,
       base::Bind(&AppListControllerDelegate::OnCloseExtensionPrompt,