Remove PNaCl's RequestFirstInstall, use resource throttle instead

chrome/browser/component_updater/pnacl/pnacl_updater_observer.h

Index: chrome/browser/component_updater/pnacl/pnacl_updater_observer.h
diff --git a/chrome/browser/component_updater/pnacl/pnacl_updater_observer.h b/chrome/browser/component_updater/pnacl/pnacl_updater_observer.h
deleted file mode 100644
index aa00ca2bf5057e364f517b003384cf35beb9f4d7..0000000000000000000000000000000000000000
--- a/chrome/browser/component_updater/pnacl/pnacl_updater_observer.h
+++ /dev/null
@@ -1,31 +0,0 @@
-// Copyright (c) 2013 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.
-
-#ifndef CHROME_BROWSER_COMPONENT_UPDATER_PNACL_PNACL_UPDATER_OBSERVER_H_
-#define CHROME_BROWSER_COMPONENT_UPDATER_PNACL_PNACL_UPDATER_OBSERVER_H_
-
-#include "base/compiler_specific.h"
-#include "chrome/browser/component_updater/component_updater_service.h"
-
-class PnaclComponentInstaller;
-
-// Monitors the component updater service, so that the callbacks registered
-// against the PnaclComponentInstaller can be notified of events.
-class PnaclUpdaterObserver : public ComponentObserver {
- public:
-  explicit PnaclUpdaterObserver(PnaclComponentInstaller* pci);
-  virtual ~PnaclUpdaterObserver();
-
-  virtual void OnEvent(Events event, int extra) OVERRIDE;
-
-  void EnsureObserving();
-  void StopObserving();
-
- private:
-  bool must_observe_;
-  PnaclComponentInstaller* pnacl_installer_;
-  DISALLOW_COPY_AND_ASSIGN(PnaclUpdaterObserver);
-};
-
-#endif  // CHROME_BROWSER_COMPONENT_UPDATER_PNACL_PNACL_UPDATER_OBSERVER_H_