Plugin Power Saver: Refactor Plugin Instance Throttling code

content/renderer/pepper/pepper_plugin_instance_throttler_unittest.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 "base/bind.h"
+#include "base/logging.h"
+#include "content/renderer/pepper/pepper_plugin_instance_throttler.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace content {
+
+namespace {
+
+class TestPepperPluginInstanceThrottler : public PepperPluginInstanceThrottler {
+ public:
+  TestPepperPluginInstanceThrottler(bool power_saver_enabled,
+                                    bool is_peripheral_content)
+      : PepperPluginInstanceThrottler(
+          base::Bind(&TestPepperPluginInstanceThrottler::ChangeCallback,
+                     base::Unretained(this)),
+          power_saver_enabled,
+          is_peripheral_content),
+        change_callback_calls_(0) {
+  }
+
+  int change_callback_calls() { return change_callback_calls_; }
+
+ private:
+  void ChangeCallback() {
+    ++change_callback_calls_;
+  }
+
+  int change_callback_calls_;
+};
+
+}  // namespace
+
+TEST(PepperPluginInstanceThrottlerTest, ThrottleAndUnthrottle) {
+  TestPepperPluginInstanceThrottler throttler(true /* power_saver_enabled */,
+                                              true /* is_perpheral_content */);
+  EXPECT_FALSE(throttler.is_throttled());
+
+}
+
+}  // namespace content