Fix a variety of omnibox bugs around zerosuggest, the escape key, or both.

chrome/browser/ui/omnibox/omnibox_edit_model.h

Index: chrome/browser/ui/omnibox/omnibox_edit_model.h
diff --git a/chrome/browser/ui/omnibox/omnibox_edit_model.h b/chrome/browser/ui/omnibox/omnibox_edit_model.h
index e9535bb01571096b5e69e067eded0def5905fdc5..274fca10bbde9428e33f70ff4b23efad38a723aa 100644
--- a/chrome/browser/ui/omnibox/omnibox_edit_model.h
+++ b/chrome/browser/ui/omnibox/omnibox_edit_model.h
@@ -275,6 +275,11 @@ class OmniboxEditModel {
   // Called when the view is losing focus.  Resets some state.
   void OnKillFocus();
 
+  // Returns whether the omnibox will handle a press of the escape key.  The
+  // caller can use this to decide whether the browser should process escape as
+  // "stop current page load".
+  bool WillHandleEscapeKey() const;
+
   // Called when the user presses the escape key.  Decides what, if anything, to
   // revert about any current edits.  Returns whether the key was handled.
   bool OnEscapeKeyPressed();