Implemented 'Reset Search engines' feature.

chrome/browser/search_engines/util.h

Index: chrome/browser/search_engines/util.h
diff --git a/chrome/browser/search_engines/util.h b/chrome/browser/search_engines/util.h
index 432569f363a2cd3f3485d1df4a2019264afdc41d..b47b2503c238e21f36bcfa8b9f19e30d633615d8 100644
--- a/chrome/browser/search_engines/util.h
+++ b/chrome/browser/search_engines/util.h
@@ -50,6 +50,19 @@ void GetSearchProvidersUsingKeywordResult(
     int* new_resource_keyword_version,
     std::set<std::string>* removed_keyword_guids);
 
+// Like GetSearchProvidersUsingKeywordResult(), but allows the caller to pass in
+// engines in |template_urls| instead of getting them via processing a web data
+// service request.
+// |*new_resource_keyword_version| should contain current version of
+// |*template_urls|.

[Peter Kasting, 2013/05/29 04:04:41]

Nit: How about we name it |resource_keyword_version| and have the comment here
say:

|resource_keyword_version| should contain the version number of the current
keyword data, i.e. the version number of the most recent prepopulate data that
has been merged into the current keyword data.  On exit, this will be set as in
GetSearchProvidersUsingKeywordResult().

[vasilii, 2013/05/29 08:30:18]

Done.

+void GetSearchProvidersUsingLoadedEngines(
+    WebDataService* service,
+    Profile* profile,
+    TemplateURLService::TemplateURLVector* template_urls,
+    TemplateURL** default_search_provider,
+    int* new_resource_keyword_version,
+    std::set<std::string>* removed_keyword_guids);
+
 // Due to a bug, the |input_encodings| field of TemplateURLData could have
 // contained duplicate entries.  This removes those entries and returns whether
 // any were found.