Fix shared library build for content_unittests

content/browser/gamepad/gamepad_provider.h

 // Copyright (c) 2011 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 CONTENT_BROWSER_GAMEPAD_PROVIDER_H_
 #define CONTENT_BROWSER_GAMEPAD_PROVIDER_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/message_loop_proxy.h"
 #include "base/shared_memory.h"
 #include "base/system_monitor/system_monitor.h"
 #include "base/task.h"
 #include "content/browser/gamepad/data_fetcher.h"
+#include "content/common/content_export.h"
 #include "content/common/gamepad_hardware_buffer.h"
 
 namespace base {
 class Thread;
 }
 
 struct GamepadMsg_Updated_Params;
 
 namespace gamepad {
 
-class Provider : public base::RefCountedThreadSafe<Provider>,
-                 public base::SystemMonitor::DevicesChangedObserver {
+class CONTENT_EXPORT Provider :
+    public base::RefCountedThreadSafe<Provider>,
+    public base::SystemMonitor::DevicesChangedObserver {
  public:
   explicit Provider(DataFetcher* fetcher);
 
   // Starts or Stops the provider. Called from creator_loop_.
   void Start();
   void Stop();
   base::SharedMemoryHandle GetRendererSharedMemoryHandle(
       base::ProcessHandle renderer_process);
 
  private:
@@ skipping 30 matching lines @@
 
   static Provider* instance_;
   base::WeakPtrFactory<Provider> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(Provider);
 };
 
 }  // namespace gamepad
 
 #endif  // CONTENT_BROWSER_GAMEPAD_PROVIDER_H_