Move ContentDecryptionModule* to platform/

Source/platform/exported/WebContentDecryptionModule.cpp

Index: Source/platform/exported/WebContentDecryptionModule.cpp
diff --git a/Source/modules/webaudio/PeriodicWave.idl b/Source/platform/exported/WebContentDecryptionModule.cpp
similarity index 84%
copy from Source/modules/webaudio/PeriodicWave.idl
copy to Source/platform/exported/WebContentDecryptionModule.cpp
index 40a04b127b0366bbd1f6c182ddf5c34cd6001362..9827c412aae137aee521e214101c2cf5f33be235 100644
--- a/Source/modules/webaudio/PeriodicWave.idl
+++ b/Source/platform/exported/WebContentDecryptionModule.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2012, Google Inc. All rights reserved.
+ * 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
@@ -22,9 +22,13 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-// PeriodicWave represents a periodic audio waveform given by its Fourier coefficients.
-[
-    Conditional=WEB_AUDIO
-] interface PeriodicWave {
+#include "config.h"
+#include "public/platform/WebContentDecryptionModule.h"
 
-};
+namespace WebKit {
+
+WebContentDecryptionModule::~WebContentDecryptionModule()
+{
+}
+
+} // namespace WebKit