Revert 247760 "Add UMA stats for ExtensionCache"

trunk/src/chrome/browser/extensions/updater/local_extension_cache.cc

Index: trunk/src/chrome/browser/extensions/updater/local_extension_cache.cc
===================================================================
--- trunk/src/chrome/browser/extensions/updater/local_extension_cache.cc	(revision 247820)
+++ trunk/src/chrome/browser/extensions/updater/local_extension_cache.cc	(working copy)
@@ -29,7 +29,7 @@
 
 LocalExtensionCache::LocalExtensionCache(
     const base::FilePath& cache_dir,
-    uint64 max_cache_size,
+    size_t max_cache_size,
     const base::TimeDelta& max_cache_age,
     const scoped_refptr<base::SequencedTaskRunner>& backend_task_runner)
     : cache_dir_(cache_dir),
@@ -151,21 +151,6 @@
   return true;
 }
 
-bool LocalExtensionCache::GetStatistics(uint64* cache_size,
-                                        size_t* extensions_count) {
-  if (state_ != kReady)
-    return false;
-
-  *cache_size = 0;
-  for (CacheMap::iterator it = cached_extensions_.begin();
-       it != cached_extensions_.end(); ++it) {
-    *cache_size += it->second.size;
-  }
-  *extensions_count = cached_extensions_.size();
-
-  return true;
-}
-
 void LocalExtensionCache::SetCacheStatusPollingDelayForTests(
     const base::TimeDelta& delay) {
   cache_status_polling_delay_ = delay;
@@ -440,7 +425,7 @@
 
   std::vector<CacheMap::iterator> items;
   items.reserve(cached_extensions_.size());
-  uint64_t total_size = 0;
+  size_t total_size = 0;
   for (CacheMap::iterator it = cached_extensions_.begin();
        it != cached_extensions_.end(); ++it) {
     items.push_back(it);