Disable the Context Menu in the tab-modal signin dialog.

chrome/browser/ui/signin_view_controller_delegate.cc

Index: chrome/browser/ui/signin_view_controller_delegate.cc
diff --git a/chrome/browser/ui/signin_view_controller_delegate.cc b/chrome/browser/ui/signin_view_controller_delegate.cc
index 00f70601746977957dfb1be06bd6b0d826382a17..c82b0c3ea22c8db432821faabdc63860776823ef 100644
--- a/chrome/browser/ui/signin_view_controller_delegate.cc
+++ b/chrome/browser/ui/signin_view_controller_delegate.cc
@@ -67,3 +67,9 @@ void SigninViewControllerDelegate::PerformNavigation() {
     CloseModalSignin();
   }
 }
+
+bool SigninViewControllerDelegate::HandleContextMenu(

[sky, 2016/06/23 19:13:24]

make order match position in header.

[anthonyvd, 2016/06/27 15:28:16]

Good catch, most of the file was out of order. Done.

+    const content::ContextMenuParams& params) {
+  // Discard the context menu
+  return true;
+}