Add caching for apps list search results.

chrome/browser/ui/app_list/search/people/people_provider.cc

Index: chrome/browser/ui/app_list/search/people/people_provider.cc
diff --git a/chrome/browser/ui/app_list/search/people/people_provider.cc b/chrome/browser/ui/app_list/search/people/people_provider.cc
index 4a9f668345c07abde716d126166b82fe6e87eb46..b999034e7df1c64563433ab072f5b87caab305a0 100644
--- a/chrome/browser/ui/app_list/search/people/people_provider.cc
+++ b/chrome/browser/ui/app_list/search/people/people_provider.cc
@@ -58,14 +58,17 @@ void PeopleProvider::Start(const base::string16& query) {
   }
 
   query_ = UTF16ToUTF8(query);
-  const base::DictionaryValue* cached_result = cache_.Get(query_);
-  if (cached_result) {
-    ProcessPeopleSearchResults(cached_result);
+
+  const CacheResult result = cache_->Get(WebserviceCache::PEOPLE, query_);
+  if (result.second) {
+    ProcessPeopleSearchResults(result.second);
     if (!people_search_fetched_callback_.is_null())
       people_search_fetched_callback_.Run();
-    return;
+    if (result.first == FRESH)
+      return;
   }
 
+
   if (!people_search_) {
     people_search_.reset(new JSONResponseFetcher(
         base::Bind(&PeopleProvider::OnPeopleSearchFetched,
@@ -143,7 +146,7 @@ void PeopleProvider::StartQuery() {
 void PeopleProvider::OnPeopleSearchFetched(
     scoped_ptr<base::DictionaryValue> json) {
   ProcessPeopleSearchResults(json.get());
-  cache_.Put(query_, json.Pass());
+  cache_->Put(WebserviceCache::PEOPLE, query_, json.Pass());
 
   if (!people_search_fetched_callback_.is_null())
     people_search_fetched_callback_.Run();