FBTF: Move virtual methods to implementation files.

chrome/browser/device_orientation/provider.h

 // Copyright (c) 2010 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_DEVICE_ORIENTATION_PROVIDER_H_
 #define CHROME_BROWSER_DEVICE_ORIENTATION_PROVIDER_H_
 
-#include "base/logging.h"
 #include "base/ref_counted.h"
 
 namespace device_orientation {
 
 class Orientation;
 
 class Provider : public base::RefCountedThreadSafe<Provider> {
  public:
   class Observer {
    public:
@@ skipping 16 matching lines @@
 
   // Get the current instance. Used for testing.
   static Provider* GetInstanceForTests();
 
   // Note: AddObserver may call back synchronously to the observer with
   // orientation data.
   virtual void AddObserver(Observer* observer) = 0;
   virtual void RemoveObserver(Observer* observer) = 0;
 
  protected:
-  Provider() {}
-  virtual ~Provider() {
-    DCHECK(instance_ == this);
-    instance_ = NULL;
-  }
+  Provider();
+  virtual ~Provider();
 
  private:
   friend class base::RefCountedThreadSafe<Provider>;
   static Provider* instance_;
 
   DISALLOW_COPY_AND_ASSIGN(Provider);
 };
 
 }  // namespace device_orientation
 
 #endif  // CHROME_BROWSER_DEVICE_ORIENTATION_PROVIDER_H_