Encrypted Media: Implement IPC based SetCdm().

content/renderer/media/crypto/proxy_decryptor.h

Index: content/renderer/media/crypto/proxy_decryptor.h
diff --git a/content/renderer/media/crypto/proxy_decryptor.h b/content/renderer/media/crypto/proxy_decryptor.h
index 981566624055522a95e170103976719dbde9d730..ab273892ac9867f898ef3401ba787b9faa4c6637 100644
--- a/content/renderer/media/crypto/proxy_decryptor.h
+++ b/content/renderer/media/crypto/proxy_decryptor.h
@@ -70,6 +70,10 @@ class ProxyDecryptor {
   // Decryptor is associated.
   media::Decryptor* GetDecryptor();
 
+  // Returns the CDM ID associated with this object. May be kInvalidCdmId if no

[ddorwin, 2014/03/11 04:06:33]

Why does WMPI need this?

[ddorwin, 2014/03/11 18:05:14]

We can delete this in the new design.

[xhwang, 2014/03/12 01:07:52]

I am still storing |cdm_id_| in ProxyDecryptor. For unprefixed EME, we are
storing it in WebCDMImpl.

+  // CDM ID is associated.
+  int GetCdmId();
+
   // Only call this once.
   bool InitializeCDM(const std::string& key_system, const GURL& frame_url);