Add time for when chrome's main() is called.

chrome/browser/chromeos/boot_times_loader.h

Index: chrome/browser/chromeos/boot_times_loader.h
diff --git a/chrome/browser/chromeos/boot_times_loader.h b/chrome/browser/chromeos/boot_times_loader.h
index ad7109bf2a8b9a7da4519dc9b1bced865e0baae4..359202705618ca4c7d0909fc976a66ad677f76e2 100644
--- a/chrome/browser/chromeos/boot_times_loader.h
+++ b/chrome/browser/chromeos/boot_times_loader.h
@@ -32,11 +32,15 @@ class BootTimesLoader : public CancelableRequestProvider {
     double firmware;           // Time from power button to kernel being loaded.
     double pre_startup;        // Time from kernel to system code being called.
     double x_started;          // Time X server is ready to be connected to.
+    double chrome_exec;        // Time session manager executed Chrome.
+    double chrome_main;        // Time chrome's main() was called.
     double login_prompt_ready; // Time login (or OOB) panel is displayed.
 
     BootTimes() : firmware(0),
                   pre_startup(0),
                   x_started(0),
+                  chrome_exec(0),
+                  chrome_main(0),
                   login_prompt_ready(0) {}
   } BootTimes;