Re-lands 58186:

chrome/browser/views/location_bar/location_bar_view.cc

Index: chrome/browser/views/location_bar/location_bar_view.cc
diff --git a/chrome/browser/views/location_bar/location_bar_view.cc b/chrome/browser/views/location_bar/location_bar_view.cc
index 9cf40a1231c8b1e1d4afcc685baef3941b8479c0..b3d1e7f14ca2ef43bd3c106e9d1b3ebde790caee 100644
--- a/chrome/browser/views/location_bar/location_bar_view.cc
+++ b/chrome/browser/views/location_bar/location_bar_view.cc
@@ -943,7 +943,7 @@ bool LocationBarView::SkipDefaultKeyEventProcessing(const views::KeyEvent& e) {
   // it can be shared between Windows and Linux.
   // For now, we just override back-space and tab keys, as back-space is the
   // accelerator for back navigation and tab key is used by some input methods.
-  if (e.GetKeyCode() == base::VKEY_BACK ||
+  if (e.GetKeyCode() == app::VKEY_BACK ||
       views::FocusManager::IsTabTraversalKeyEvent(e))
     return true;
   return false;