Adding a call from ChromeACProvider to Search Prefetch service

This is called when the AC matches change. The result will be used in
the future to check top result, all results gone (i.e., we can cancel
ongoing prefetches).

Bug: 1138631
Change-Id: I7b6bad212888eac36756f41f2f534233df596b04
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2493461
Commit-Queue: Ryan Sturm <[email protected]>
Reviewed-by: Justin Donnelly <[email protected]>
Reviewed-by: Robert Ogden <[email protected]>
Cr-Commit-Position: refs/heads/master@{#820409}
diff --git a/chrome/browser/autocomplete/chrome_autocomplete_provider_client.h b/chrome/browser/autocomplete/chrome_autocomplete_provider_client.h
index ede81a6..85b4082 100644
--- a/chrome/browser/autocomplete/chrome_autocomplete_provider_client.h
+++ b/chrome/browser/autocomplete/chrome_autocomplete_provider_client.h
@@ -84,6 +84,8 @@
   bool IsTabOpenWithURL(const GURL& url,
                         const AutocompleteInput* input) override;
   bool IsBrowserUpdateAvailable() const override;
+  void OnAutocompleteControllerResultReady(
+      AutocompleteController* controller) override;
 
   // For testing.
   void set_storage_partition(content::StoragePartition* storage_partition) {