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

ppapi/cpp/private/content_decryptor_private.cc

Index: ppapi/cpp/private/content_decryptor_private.cc
diff --git a/ppapi/cpp/private/content_decryptor_private.cc b/ppapi/cpp/private/content_decryptor_private.cc
index 7dbce34d6edd45da8fe101a2a2928e754f98d61e..18f077221d2a0f2170232ab711edf384d9e1d9d8 100644
--- a/ppapi/cpp/private/content_decryptor_private.cc
+++ b/ppapi/cpp/private/content_decryptor_private.cc
@@ -105,6 +105,23 @@ void Decrypt(PP_Instance instance,
       *encrypted_block_info);
 }
 
+void ResetVideoDecoder(PP_Instance instance, uint32_t request_id) {
+  void* object =
+      Instance::GetPerInstanceObject(instance, kPPPContentDecryptorInterface);
+  if (!object)
+    return;
+  static_cast<ContentDecryptor_Private*>(object)->ResetVideoDecoder(
+      request_id);
+}
+
+void StopVideoDecoder(PP_Instance instance, uint32_t request_id) {
+  void* object =
+      Instance::GetPerInstanceObject(instance, kPPPContentDecryptorInterface);
+  if (!object)
+    return;
+  static_cast<ContentDecryptor_Private*>(object)->StopVideoDecoder(request_id);
+}
+
 void DecryptAndDecodeFrame(
     PP_Instance instance,
     PP_Resource encrypted_resource,
@@ -126,6 +143,8 @@ const PPP_ContentDecryptor_Private ppp_content_decryptor = {
   &AddKey,
   &CancelKeyRequest,
   &Decrypt,
+  &ResetVideoDecoder,
+  &StopVideoDecoder,
   &DecryptAndDecodeFrame
 };
 
@@ -220,6 +239,22 @@ void ContentDecryptor_Private::DeliverBlock(
   }
 }
 
+void ContentDecryptor_Private::DecoderReset(uint32_t request_id) {
+  if (has_interface<PPB_ContentDecryptor_Private>()) {
+    get_interface<PPB_ContentDecryptor_Private>()->DecoderReset(
+        associated_instance_.pp_instance(),
+        request_id);
+  }
+}
+
+void ContentDecryptor_Private::DecoderStopped(uint32_t request_id) {
+  if (has_interface<PPB_ContentDecryptor_Private>()) {
+    get_interface<PPB_ContentDecryptor_Private>()->DecoderStopped(
+        associated_instance_.pp_instance(),
+        request_id);
+  }
+}
+
 void ContentDecryptor_Private::DeliverFrame(
     pp::Buffer_Dev decrypted_frame,
     const PP_DecryptedFrameInfo& decrypted_frame_info) {