Encrypted Media: Implement IPC based SetCdm().

content/renderer/media/crypto/proxy_decryptor.cc

Index: content/renderer/media/crypto/proxy_decryptor.cc
diff --git a/content/renderer/media/crypto/proxy_decryptor.cc b/content/renderer/media/crypto/proxy_decryptor.cc
index 72b11581201fe30546e61f56dbc165a5488198fe..30c0bf146c119a476de8868bcb3a0270cf25d1e3 100644
--- a/content/renderer/media/crypto/proxy_decryptor.cc
+++ b/content/renderer/media/crypto/proxy_decryptor.cc
@@ -42,7 +42,6 @@ ProxyDecryptor::ProxyDecryptor(
     const CreatePepperCdmCB& create_pepper_cdm_cb,
 #elif defined(OS_ANDROID)
     RendererMediaPlayerManager* manager,
-    int cdm_id,
 #endif  // defined(ENABLE_PEPPER_CDMS)
     const KeyAddedCB& key_added_cb,
     const KeyErrorCB& key_error_cb,
@@ -52,7 +51,7 @@ ProxyDecryptor::ProxyDecryptor(
       create_pepper_cdm_cb_(create_pepper_cdm_cb),
 #elif defined(OS_ANDROID)
       manager_(manager),
-      cdm_id_(cdm_id),
+      cdm_id_(RendererMediaPlayerManager::kInvalidCdmId),
 #endif  // defined(ENABLE_PEPPER_CDMS)
       key_added_cb_(key_added_cb),
       key_error_cb_(key_error_cb),
@@ -76,6 +75,10 @@ media::Decryptor* ProxyDecryptor::GetDecryptor() {
   return media_keys_ ? media_keys_->GetDecryptor() : NULL;
 }
 
+int ProxyDecryptor::GetCdmId() {
+  return cdm_id_;
+}
+
 bool ProxyDecryptor::InitializeCDM(const std::string& key_system,
                                    const GURL& frame_url) {
   DVLOG(1) << "InitializeCDM: key_system = " << key_system;
@@ -191,8 +194,8 @@ scoped_ptr<media::MediaKeys> ProxyDecryptor::CreateMediaKeys(
       create_pepper_cdm_cb_,
 #elif defined(OS_ANDROID)
       manager_,
-      cdm_id_,
       frame_url,
+      &cdm_id_,
 #endif  // defined(ENABLE_PEPPER_CDMS)
       base::Bind(&ProxyDecryptor::OnSessionCreated,
                  weak_ptr_factory_.GetWeakPtr()),