Views Textfield/Omnibox: Do not paste on Ctrl+Alt[Gr]+V or AltGr+V.

ui/views/controls/textfield/native_textfield_views.cc

Index: ui/views/controls/textfield/native_textfield_views.cc
diff --git a/ui/views/controls/textfield/native_textfield_views.cc b/ui/views/controls/textfield/native_textfield_views.cc
index 6bf95a60bef6047d4156246ffa4c519eb43b3117..6f5bdb7e8efe2dab2cf196f06f1e8816952bb5e8 100644
--- a/ui/views/controls/textfield/native_textfield_views.cc
+++ b/ui/views/controls/textfield/native_textfield_views.cc
@@ -1192,7 +1192,7 @@ bool NativeTextfieldViews::HandleKeyEvent(const ui::KeyEvent& key_event) {
     const bool readable = !textfield_->IsObscured();
     const bool shift = key_event.IsShiftDown();
     const bool control = key_event.IsControlDown();
-    const bool alt = key_event.IsAltDown();
+    const bool alt = key_event.IsAltDown() || key_event.IsAltGrDown();
     bool text_changed = false;
     bool cursor_changed = false;
     switch (key_code) {