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

chrome/browser/component_updater/chrome_component_updater_configurator.cc

Index: chrome/browser/component_updater/chrome_component_updater_configurator.cc
diff --git a/chrome/browser/component_updater/chrome_component_updater_configurator.cc b/chrome/browser/component_updater/chrome_component_updater_configurator.cc
index 97e99e71a3045c27056573ceeca06d0449e41e9f..1fc52dccd518a3e7fbacf89e9c6ee50e96aab352 100644
--- a/chrome/browser/component_updater/chrome_component_updater_configurator.cc
+++ b/chrome/browser/component_updater/chrome_component_updater_configurator.cc
@@ -7,6 +7,8 @@
 #include <string>
 #include <vector>
 
+#include "base/files/file_path.h"
+#include "base/path_service.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "base/version.h"
@@ -17,6 +19,7 @@
 #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"
 #if defined(OS_WIN)
 #include "chrome/installer/util/google_update_settings.h"
 #endif
@@ -55,6 +58,7 @@ class ChromeConfigurator : public update_client::Configurator {
   bool UseCupSigning() const override;
   scoped_refptr<base::SequencedTaskRunner> GetSequencedTaskRunner()
       const override;
+  base::FilePath GetMetadataPath() const override;
 
  private:
   friend class base::RefCountedThreadSafe<ChromeConfigurator>;
@@ -172,6 +176,13 @@ ChromeConfigurator::GetSequencedTaskRunner() const {
           base::SequencedWorkerPool::CONTINUE_ON_SHUTDOWN);
 }
 
+base::FilePath ChromeConfigurator::GetMetadataPath() const {
+  base::FilePath result;
+  if (PathService::Get(chrome::DIR_USER_DATA, &result))
+    return result.AppendASCII("component_metadata.json");
+  return base::FilePath();
+}
+
 }  // namespace
 
 scoped_refptr<update_client::Configurator>