[PowerProfiler] ***NOT-FOR-REVIEW*** Dummy power data provider.

content/browser/power_profiler/power_data_provider_dummy.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/power_profiler/power_data_provider.h"
 
 namespace content {
 
+class PowerDataProviderDummy : public PowerDataProvider {
+  public:
+    PowerDataProviderDummy() : step(50) {
+    }
+
+    virtual ~PowerDataProviderDummy(){}
+
+    virtual base::TimeDelta GetSamplingRate() override {
+       return base::TimeDelta::FromMilliseconds(50);
+    }
+
+    virtual AccuracyLevel GetAccuracyLevel() override {
+      return High;
+    }
+
+    virtual PowerEventVector GetData() override {
+        PowerEventVector events;
+        PowerEvent event;
+
+        double package_power = step * 100;
+        step /= 2;
+        if (step < 1)
+          step = 50;
+        event.type = PowerEvent::SOC_PACKAGE;
+        event.value = package_power;
+        event.time = base::TimeTicks::Now();
+        events.push_back(event);
+        return events;
+    }
+
+  private:
+    int step;
+    DISALLOW_COPY_AND_ASSIGN(PowerDataProviderDummy);
+};
+
 scoped_ptr<PowerDataProvider> PowerDataProvider::Create() {
-  return make_scoped_ptr<PowerDataProvider>(NULL);
+  return make_scoped_ptr<PowerDataProvider>(new PowerDataProviderDummy);
 }
 
 }  // namespace content