Parent the AppInfoDialog using a ModalDialogHost

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 318ec8a180bddf052fe8dd05cb8fcc2ded9d63f3..45f7ac47e3ed109b1c7c09742011c33d4a83642f 100644
--- a/chrome/browser/ui/app_list/app_list_controller_delegate.cc
+++ b/chrome/browser/ui/app_list/app_list_controller_delegate.cc
@@ -55,8 +55,8 @@ bool AppListControllerDelegate::ForceNativeDesktop() const {
 
 void AppListControllerDelegate::ViewClosing() {}
 
-gfx::Rect AppListControllerDelegate::GetAppListBounds() {
-  return gfx::Rect();
+gfx::Size AppListControllerDelegate::GetAppListSize() {
+  return gfx::Size();
 }
 
 void AppListControllerDelegate::OnShowChildDialog() {
@@ -109,9 +109,9 @@ void AppListControllerDelegate::DoShowAppInfoFlow(
 
   // Since the AppListControllerDelegate is a leaky singleton, passing its raw
   // pointer around is OK.
-  ShowAppInfoInAppList(
-      GetAppListWindow(),
-      GetAppListBounds(),
+  ShowAppInfoModally(
+      GetDialogHost(),
+      GetAppListSize(),
       profile,
       extension,
       base::Bind(&AppListControllerDelegate::OnCloseChildDialog,