Move ContentDecryptionModule* to platform/

Source/platform/drm/ContentDecryptionModule.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 13 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef ContentDecryptionModule_h
 #define ContentDecryptionModule_h
 
+#include "platform/PlatformExport.h"
 #include "public/platform/WebContentDecryptionModule.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
 class ContentDecryptionModuleSession;
 class ContentDecryptionModuleSessionClient;
 
-class ContentDecryptionModule {
+class PLATFORM_EXPORT ContentDecryptionModule {
+    WTF_MAKE_NONCOPYABLE(ContentDecryptionModule);
 public:
     static bool supportsKeySystem(const String&);
     static PassOwnPtr<ContentDecryptionModule> create(const String& keySystem);
 
     ContentDecryptionModule(PassOwnPtr<WebKit::WebContentDecryptionModule>);
     ~ContentDecryptionModule();
 
     // ContentDecryptionModule
     bool supportsMIMEType(const String&);
     PassOwnPtr<ContentDecryptionModuleSession> createSession(ContentDecryptionModuleSessionClient*);
 
 private:
     OwnPtr<WebKit::WebContentDecryptionModule> m_cdm;
 };
 
 } // namespace WebCore
 
 #endif // ContentDecryptionModule_h