Enforce ARC apps are disabled on incognito mode

ARC apps are added to the context menu to allow the user to handle
certain urls via an installed app.

However these apps shoudln't be added to such UI while in incognito
mode, this CL enforces that.

Bug: b/112107069
Test: Try.
Change-Id: I200e38403f07301fb5d90fd6a381c57a0d150872
Reviewed-on: https://chromium-review.googlesource.com/1168146Reviewed-by: Yusuke Sato <yusukes@chromium.org>
Commit-Queue: David Jacobo <djacobo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#581793}

chrome/browser/chromeos/arc/intent_helper/open_with_menu.cc

@@ -14,6 +14,7 @@
 #include "chrome/app/chrome_command_ids.h"
 #include "chrome/grit/generated_resources.h"
 #include "components/renderer_context_menu/render_view_context_menu_proxy.h"
+#include "content/public/browser/browser_context.h"
 #include "content/public/common/context_menu_params.h"
 #include "ui/base/l10n/l10n_util.h"
 
@@ -45,6 +46,10 @@ OpenWithMenu::OpenWithMenu(content::BrowserContext* context,
 OpenWithMenu::~OpenWithMenu() = default;
 
 void OpenWithMenu::InitMenu(const content::ContextMenuParams& params) {
+  // Enforcing no items are added to the context menu during incognito mode.
+  if (context_->IsOffTheRecord())
+    return;
+
   menu_model_ = LinkHandlerModel::Create(context_, params.link_url);
   if (!menu_model_)
     return;