NOT FOR COMMIT: Make altgr+left and altgr+right navigate back/forward on views.

ui/content_accelerators/accelerator_util.cc

Index: ui/content_accelerators/accelerator_util.cc
diff --git a/ui/content_accelerators/accelerator_util.cc b/ui/content_accelerators/accelerator_util.cc
index a2faa97fe70a44ffeafed368f6c7b9dbc1a131ff..8c04123e037e3f925c165772f76abe2823381a4c 100644
--- a/ui/content_accelerators/accelerator_util.cc
+++ b/ui/content_accelerators/accelerator_util.cc
@@ -22,6 +22,8 @@ int GetModifiersFromNativeWebKeyboardEvent(
     modifiers |= ui::EF_CONTROL_DOWN;
   if (event.modifiers & content::NativeWebKeyboardEvent::AltKey)
     modifiers |= ui::EF_ALT_DOWN;
+  if (event.modifiers & content::NativeWebKeyboardEvent::AltGrKey)
+    modifiers |= ui::EF_ALTGR_DOWN;
 #if defined(OS_MACOSX) || defined(OS_CHROMEOS)
   if (event.modifiers & content::NativeWebKeyboardEvent::MetaKey)
     modifiers |= ui::EF_COMMAND_DOWN;