Add a chrome://flag for the App Info dialog on Mac

chrome/browser/ui/views/apps/app_info_dialog/app_info_dialog_views.cc

Index: chrome/browser/ui/views/apps/app_info_dialog/app_info_dialog_views.cc
diff --git a/chrome/browser/ui/views/apps/app_info_dialog/app_info_dialog_views.cc b/chrome/browser/ui/views/apps/app_info_dialog/app_info_dialog_views.cc
index 6ef7371c4a070461f8c61d1b4a57ea476ff3a7bf..703daa863d591d3b685b5b823f2226e2d87d1de1 100644
--- a/chrome/browser/ui/views/apps/app_info_dialog/app_info_dialog_views.cc
+++ b/chrome/browser/ui/views/apps/app_info_dialog/app_info_dialog_views.cc
@@ -5,6 +5,7 @@
 #include "chrome/browser/ui/views/apps/app_info_dialog/app_info_dialog_views.h"
 
 #include "base/bind.h"
+#include "base/command_line.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/metrics/histogram.h"
 #include "chrome/browser/chrome_notification_types.h"
@@ -15,6 +16,7 @@
 #include "chrome/browser/ui/views/apps/app_info_dialog/app_info_header_panel.h"
 #include "chrome/browser/ui/views/apps/app_info_dialog/app_info_permissions_panel.h"
 #include "chrome/browser/ui/views/apps/app_info_dialog/app_info_summary_panel.h"
+#include "chrome/common/chrome_switches.h"
 #include "components/constrained_window/constrained_window_views.h"
 #include "content/public/browser/web_contents.h"
 #include "extensions/browser/extension_registry.h"
@@ -31,9 +33,26 @@
 #include "ui/views/widget/widget.h"
 #include "ui/views/window/dialog_delegate.h"
 
+namespace {
+
+#if defined(OS_MACOSX)
+bool GetSwitchFromCommandLine() {

[benwells, 2015/06/03 04:30:41]

Nit: rename to IsAppInfoDialogMacEnabled or something similar.

[tapted, 2015/06/03 05:00:21]

Done.

+  const base::CommandLine* command_line =
+      base::CommandLine::ForCurrentProcess();
+  if (command_line->HasSwitch(switches::kDisableAppInfoDialogMac))
+    return false;
+  if (command_line->HasSwitch(switches::kEnableAppInfoDialogMac))
+    return true;
+  return false;  // Current default.
+}
+#endif
+
+}  // namespace
+
 bool CanShowAppInfoDialog() {
 #if defined(OS_MACOSX)
-  return app_list::switches::IsMacViewsAppListListEnabled();

[benwells, 2015/06/03 04:30:41]

(not related to this patch) why is this ListList?

[tapted, 2015/06/03 05:00:21]

It is Frerman, "L'ist" for "the is".

(fix: https://codereview.chromium.org/1143083009 - I'll rebase this after that
lands)

+  static const bool can_show = GetSwitchFromCommandLine();
+  return can_show;
 #else
   return true;
 #endif