Assume all providers may give zero suggest responses.

chrome/browser/autocomplete/autocomplete_controller.h

Index: chrome/browser/autocomplete/autocomplete_controller.h
diff --git a/chrome/browser/autocomplete/autocomplete_controller.h b/chrome/browser/autocomplete/autocomplete_controller.h
index cd808884fa33da2378be28b0cec587e9a80aa893..90a24a2acf632564f10cfea77de0ef25769b8a5c 100644
--- a/chrome/browser/autocomplete/autocomplete_controller.h
+++ b/chrome/browser/autocomplete/autocomplete_controller.h
@@ -81,9 +81,8 @@ class AutocompleteController : public AutocompleteProviderListener {
   void Stop(bool clear_result);
 
   // Called when the omnibox is focused while no existing user input is in
-  // progress.  This is used to trigger any providers which want to provide
-  // matches in response to focus.  See
-  // AutocompleteProvider::ProvidesMatchesOnOmniboxFocus().
+  // progress.  This is used to trigger all providers with |on_focus| parameter

[Peter Kasting, 2015/01/07 20:16:36]

This comment refers to a variable or parameter that isn't actually present in
this function call.  Please clarify, as a reader of this won't necessarily know
what "on_focus" is.

[Maria, 2015/01/08 07:52:38]

Done.

+  // set to check if they want to provide on focus matches.
   void OnOmniboxFocused(const AutocompleteInput& input);
 
   // Asks the relevant provider to delete |match|, and ensures observers are