Track when user signs in the profile.

chrome/browser/signin/chrome_signin_client.cc

Index: chrome/browser/signin/chrome_signin_client.cc
diff --git a/chrome/browser/signin/chrome_signin_client.cc b/chrome/browser/signin/chrome_signin_client.cc
index 66f9326190850b68d8d65509611d974e942246e9..1d7449a496963d4bbcf5c29bf6b451402eb684bc 100644
--- a/chrome/browser/signin/chrome_signin_client.cc
+++ b/chrome/browser/signin/chrome_signin_client.cc
@@ -7,12 +7,14 @@
 #include "base/command_line.h"
 #include "base/guid.h"
 #include "base/prefs/pref_service.h"
+#include "chrome/browser/browser_process.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/content_settings/cookie_settings.h"
 #include "chrome/browser/net/chrome_cookie_notification_details.h"
 #include "chrome/browser/signin/local_auth.h"
 #include "chrome/browser/webdata/web_data_service_factory.h"
 #include "chrome/common/chrome_version_info.h"
+#include "components/metrics/metrics_service.h"
 #include "components/signin/core/common/profile_management_switches.h"
 #include "components/signin/core/common/signin_pref_names.h"
 #include "components/signin/core/common/signin_switches.h"
@@ -30,6 +32,10 @@
 #include "components/user_manager/user_manager.h"
 #endif
 
+#if !defined(OS_ANDROID)
+#include "chrome/browser/first_run/first_run.h"
+#endif
+
 using content::ChildProcessHost;
 using content::RenderProcessHost;
 
@@ -176,6 +182,19 @@ std::string ChromeSigninClient::GetProductVersion() {
   return chrome_version.CreateVersionString();
 }
 
+bool ChromeSigninClient::IsFirstRun() const {
+#if defined(OS_ANDROID)
+  return false;
+#else
+  return first_run::IsChromeFirstRun();
+#endif
+}
+
+base::Time ChromeSigninClient::GetInstallDate() {
+  return base::Time::FromTimeT(
+      g_browser_process->metrics_service()->GetInstallDate());
+}
+
 scoped_ptr<SigninClient::CookieChangedCallbackList::Subscription>
 ChromeSigninClient::AddCookieChangedCallback(
     const CookieChangedCallback& callback) {