Add CDM allocator interface.

webkit/media/crypto/ppapi/clear_key_cdm.h

Index: webkit/media/crypto/ppapi/clear_key_cdm.h
diff --git a/webkit/media/crypto/ppapi/clear_key_cdm.h b/webkit/media/crypto/ppapi/clear_key_cdm.h
index 44b3110e315dcc17353d302d724d80a125238f98..bb1b546c2e270fbdd3f09f65fed359a43c46bb59 100644
--- a/webkit/media/crypto/ppapi/clear_key_cdm.h
+++ b/webkit/media/crypto/ppapi/clear_key_cdm.h
@@ -24,7 +24,7 @@ namespace webkit_media {
 // Clear key implementation of the cdm::ContentDecryptionModule interface.
 class ClearKeyCdm : public cdm::ContentDecryptionModule {
  public:
-  ClearKeyCdm();
+  explicit ClearKeyCdm(cdm::Allocator* allocator);
   virtual ~ClearKeyCdm();
 
   // ContentDecryptionModule implementation.
@@ -101,6 +101,8 @@ class ClearKeyCdm : public cdm::ContentDecryptionModule {
   // Protects the |client_| from being accessed by the |decryptor_|
   // simultaneously.
   base::Lock client_lock_;
+  // Allocates buffers using the CDM wrapper.
+  cdm::Allocator* allocator_;
 };
 
 }  // namespace webkit_media