Revert of [chromeos/about:power] Collect cpuidle and cpufreq stats

chrome/browser/chromeos/power/power_data_collector.cc

Index: chrome/browser/chromeos/power/power_data_collector.cc
diff --git a/chrome/browser/chromeos/power/power_data_collector.cc b/chrome/browser/chromeos/power/power_data_collector.cc
index a6ffe8f635264b78445cd76ae65cbb813d00094b..b997bb03a9393c7ab51c4f0c4b6a7d007742e9bc 100644
--- a/chrome/browser/chromeos/power/power_data_collector.cc
+++ b/chrome/browser/chromeos/power/power_data_collector.cc
@@ -25,13 +25,7 @@
   // DBusThreadManager is initialized.
   CHECK(DBusThreadManager::Get());
   CHECK(g_power_data_collector == NULL);
-  g_power_data_collector = new PowerDataCollector(true);
-}
-
-void PowerDataCollector::InitializeForTesting() {
-  CHECK(DBusThreadManager::Get());
-  CHECK(g_power_data_collector == NULL);
-  g_power_data_collector = new PowerDataCollector(false);
+  g_power_data_collector = new PowerDataCollector();
 }
 
 // static
@@ -66,10 +60,8 @@
   AddSample(&system_resumed_data_, sample);
 }
 
-PowerDataCollector::PowerDataCollector(const bool start_cpu_data_collector) {
+PowerDataCollector::PowerDataCollector() {
   DBusThreadManager::Get()->GetPowerManagerClient()->AddObserver(this);
-  if (start_cpu_data_collector)
-    cpu_data_collector_.Start();
 }
 
 PowerDataCollector::~PowerDataCollector() {