Add module for counting date-last-roll-call and persisting those counts

chrome/browser/extensions/updater/chrome_update_client_config.cc

Index: chrome/browser/extensions/updater/chrome_update_client_config.cc
diff --git a/chrome/browser/extensions/updater/chrome_update_client_config.cc b/chrome/browser/extensions/updater/chrome_update_client_config.cc
index 4dfb696cf0366b1cc08c40ad06f4db4ecbe43d4a..32e5614faa21fc0855859a7250bfbf7b22b6615b 100644
--- a/chrome/browser/extensions/updater/chrome_update_client_config.cc
+++ b/chrome/browser/extensions/updater/chrome_update_client_config.cc
@@ -3,12 +3,14 @@
 // found in the LICENSE file.
 
 #include "base/command_line.h"
+#include "base/path_service.h"
 #include "base/version.h"
 #include "chrome/browser/component_updater/component_patcher_operation_out_of_process.h"
 #include "chrome/browser/extensions/updater/chrome_update_client_config.h"
 #include "chrome/browser/google/google_brand.h"
 #include "chrome/browser/update_client/chrome_update_query_params_delegate.h"
 #include "chrome/common/channel_info.h"
+#include "chrome/common/chrome_paths.h"
 #include "content/public/browser/browser_context.h"
 
 namespace extensions {
@@ -100,6 +102,12 @@ bool ChromeUpdateClientConfig::UseCupSigning() const {
   return impl_.UseCupSigning();
 }
 
+base::FilePath ChromeUpdateClientConfig::GetMetadataPath() const {
+  base::FilePath result;
+  CHECK(PathService::Get(chrome::DIR_USER_DATA, &result));
+  return result.AppendASCII("extensions_metadata.json");
+}
+
 ChromeUpdateClientConfig::~ChromeUpdateClientConfig() {}
 
 }  // namespace extensions