Add decoder de-initialize and reset to the Pepper CDM API.

ppapi/proxy/ppp_content_decryptor_private_proxy.cc

Index: ppapi/proxy/ppp_content_decryptor_private_proxy.cc
diff --git a/ppapi/proxy/ppp_content_decryptor_private_proxy.cc b/ppapi/proxy/ppp_content_decryptor_private_proxy.cc
index 91d81154a4658efd8ce0901ac3c3f1e6683a7ff6..aa39e8315226c6978a632be4744e573af503be63 100644
--- a/ppapi/proxy/ppp_content_decryptor_private_proxy.cc
+++ b/ppapi/proxy/ppp_content_decryptor_private_proxy.cc
@@ -142,8 +142,8 @@ void CancelKeyRequest(PP_Instance instance, PP_Var session_id) {
 }
 
 void Decrypt(PP_Instance instance,
-                PP_Resource encrypted_block,
-                const PP_EncryptedBlockInfo* encrypted_block_info) {
+             PP_Resource encrypted_block,
+             const PP_EncryptedBlockInfo* encrypted_block_info) {
   HostDispatcher* dispatcher = HostDispatcher::GetForInstance(instance);
   if (!dispatcher) {
     NOTREACHED();
@@ -185,6 +185,34 @@ void Decrypt(PP_Instance instance,
           serialized_block_info));
 }
 
+void ResetVideoDecoder(PP_Instance instance, uint32_t request_id) {
+  HostDispatcher* dispatcher = HostDispatcher::GetForInstance(instance);
+  if (!dispatcher) {
+    NOTREACHED();
+    return;
+  }
+
+  dispatcher->Send(
+      new PpapiMsg_PPPContentDecryptor_ResetVideoDecoder(
+          API_ID_PPP_CONTENT_DECRYPTOR_PRIVATE,
+          instance,
+          request_id));
+}
+
+void StopVideoDecoder(PP_Instance instance, uint32_t request_id) {
+  HostDispatcher* dispatcher = HostDispatcher::GetForInstance(instance);
+  if (!dispatcher) {
+    NOTREACHED();
+    return;
+  }
+
+  dispatcher->Send(
+      new PpapiMsg_PPPContentDecryptor_StopVideoDecoder(
+          API_ID_PPP_CONTENT_DECRYPTOR_PRIVATE,
+          instance,
+          request_id));
+}
+
 void DecryptAndDecodeFrame(
     PP_Instance instance,
     PP_Resource encrypted_frame,
@@ -235,6 +263,8 @@ static const PPP_ContentDecryptor_Private content_decryptor_interface = {
   &AddKey,
   &CancelKeyRequest,
   &Decrypt,
+  &ResetVideoDecoder,
+  &StopVideoDecoder,
   &DecryptAndDecodeFrame
 };
 
@@ -272,6 +302,10 @@ bool PPP_ContentDecryptor_Private_Proxy::OnMessageReceived(
                         OnMsgCancelKeyRequest)
     IPC_MESSAGE_HANDLER(PpapiMsg_PPPContentDecryptor_Decrypt,
                         OnMsgDecrypt)
+    IPC_MESSAGE_HANDLER(PpapiMsg_PPPContentDecryptor_ResetVideoDecoder,
+                        OnMsgResetVideoDecoder)
+    IPC_MESSAGE_HANDLER(PpapiMsg_PPPContentDecryptor_StopVideoDecoder,
+                        OnMsgStopVideoDecoder)
     IPC_MESSAGE_HANDLER(PpapiMsg_PPPContentDecryptor_DecryptAndDecodeFrame,
                         OnMsgDecryptAndDecodeFrame)
     IPC_MESSAGE_UNHANDLED(handled = false)
@@ -335,6 +369,28 @@ void PPP_ContentDecryptor_Private_Proxy::OnMsgDecrypt(
   }
 }
 
+void PPP_ContentDecryptor_Private_Proxy::OnMsgResetVideoDecoder(
+    PP_Instance instance,
+    uint32_t request_id) {
+  if (ppp_decryptor_impl_) {
+    CallWhileUnlocked(
+        ppp_decryptor_impl_->ResetVideoDecoder,
+        instance,
+        request_id);
+  }
+}
+
+void PPP_ContentDecryptor_Private_Proxy::OnMsgStopVideoDecoder(
+    PP_Instance instance,
+    uint32_t request_id) {
+  if (ppp_decryptor_impl_) {
+    CallWhileUnlocked(
+        ppp_decryptor_impl_->StopVideoDecoder,
+        instance,
+        request_id);
+  }
+}
+
 void PPP_ContentDecryptor_Private_Proxy::OnMsgDecryptAndDecodeFrame(
     PP_Instance instance,
     const PPPDecryptor_Buffer& encrypted_frame,