Implement {Start,Stop}CapturingKeyStrokes for Instant.

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 6caf62f542932a94b4d3cbe564454c88cc6574c4..74b53e538549d36ace5cfcc1c6f1b7b237291eda 100644
--- a/chrome/browser/ui/omnibox/omnibox_edit_model.h
+++ b/chrome/browser/ui/omnibox/omnibox_edit_model.h
@@ -213,6 +213,11 @@ class OmniboxEditModel : public AutocompleteControllerDelegate {
   // control key is down (at the time we're gaining focus).
   void OnSetFocus(bool control_down);
 
+  // Called when we switch between using visible and invisible focus for the
+  // omnibox. NOTE: this does NOT convey whether the view currently has focus;
+  // only whether the focus will be visible when it does gain focus.
+  void OnFocusVisibilityChange(bool visible_focus);

[Mathieu, 2012/11/20 23:26:01]

Again, *Changed may be better.

[samarth, 2012/11/21 00:40:15]

Done.

+
   // Sent before |OnKillFocus| and before the popup is closed.
   void OnWillKillFocus(gfx::NativeView view_gaining_focus);
 
@@ -404,6 +409,9 @@ class OmniboxEditModel : public AutocompleteControllerDelegate {
   // Whether the edit has focus.
   bool has_focus_;
 
+  // Will the focus be visible?
+  bool focus_is_visible_;
+
   // The URL of the currently displayed page.
   string16 permanent_text_;