Drop struct BootStat and all usage (boot stats are now sent from chromeos code).

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 2312a576f93630b0940cabeb287a39b6959e0f4b..2abc1649873bdeb66b6e964577c5a2875a81f2c1 100644
--- a/chrome/browser/chromeos/boot_times_loader.h
+++ b/chrome/browser/chromeos/boot_times_loader.h
@@ -34,38 +34,8 @@ class BootTimesLoader : public content::NotificationObserver {
   BootTimesLoader();
   virtual ~BootTimesLoader();
 
-  // All fields are 0.0 if they couldn't be found.
-  typedef struct BootTimes {
-    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.
-    double system;             // Time system took to start chrome.
-    double chrome;             // Time chrome took to display login panel.
-    double total;              // Time from power button to login panel.
-
-    BootTimes() : firmware(0),
-                  pre_startup(0),
-                  x_started(0),
-                  chrome_exec(0),
-                  chrome_main(0),
-                  login_prompt_ready(0),
-                  system(0),
-                  chrome(0),
-                  total(0) {}
-  } BootTimes;
-
   static BootTimesLoader* Get();
 
-  typedef base::Callback<void(const BootTimes&)> GetBootTimesCallback;
-
-  // Asynchronously requests the info.
-  CancelableTaskTracker::TaskId GetBootTimes(
-      const GetBootTimesCallback& callback,
-      CancelableTaskTracker* tracker);
-
   // Add a time marker for login. A timeline will be dumped to
   // /tmp/login-times-sent after login is done. If |send_to_uma| is true
   // the time between this marker and the last will be sent to UMA with
@@ -113,10 +83,6 @@ class BootTimesLoader : public content::NotificationObserver {
    public:
     Backend() {}
 
-    void GetBootTimesAndRunCallback(
-        const CancelableTaskTracker::IsCanceledCallback& is_canceled_cb,
-        const GetBootTimesCallback& callback);
-
    private:
     friend class base::RefCountedThreadSafe<Backend>;