Decouple loading of channel info and the rest of machine statistics.

chrome/browser/chromeos/system/statistics_provider.h

Index: chrome/browser/chromeos/system/statistics_provider.h
diff --git a/chrome/browser/chromeos/system/statistics_provider.h b/chrome/browser/chromeos/system/statistics_provider.h
index 9855474a7439dc71cc1ceb86ce7b259c0feb85dc..72a722ca569072efff38538bdb76b3edabd8ae66 100644
--- a/chrome/browser/chromeos/system/statistics_provider.h
+++ b/chrome/browser/chromeos/system/statistics_provider.h
@@ -16,6 +16,9 @@ class StatisticsProvider {
   // Initializes the statistics provider.
   virtual void Init() = 0;
 
+  // Starts loading the machine statistcs.
+  virtual void StartLoadingMachineStatistics() = 0;
+
   // Retrieve the named machine statistic (e.g. "hardware_class").
   // This does not update the statistcs. If the |name| is not set, |result|
   // preserves old value.