Return void from all PPP CDM API interface methods

webkit/plugins/ppapi/ppapi_plugin_instance.cc

Index: webkit/plugins/ppapi/ppapi_plugin_instance.cc
diff --git a/webkit/plugins/ppapi/ppapi_plugin_instance.cc b/webkit/plugins/ppapi/ppapi_plugin_instance.cc
index 6a2a3fe82f44632c9af840e9970c831fb20d939f..600fc44f87dc78d3f9e5d2b59cf094c628aa2d2f 100644
--- a/webkit/plugins/ppapi/ppapi_plugin_instance.cc
+++ b/webkit/plugins/ppapi/ppapi_plugin_instance.cc
@@ -1466,10 +1466,11 @@ bool PluginInstance::GenerateKeyRequest(const std::string& key_system,
       PpapiGlobals::Get()->GetVarTracker()->MakeArrayBufferPPVar(
           init_data.size(), init_data.data());
 
-  return PP_ToBool(plugin_decryption_interface_->GenerateKeyRequest(
+  plugin_decryption_interface_->GenerateKeyRequest(
       pp_instance(),
       StringVar::StringToPPVar(key_system),
-      init_data_array));
+      init_data_array);
+  return true;
 }
 
 bool PluginInstance::AddKey(const std::string& session_id,
@@ -1485,20 +1486,21 @@ bool PluginInstance::AddKey(const std::string& session_id,
           init_data.size(),
           init_data.data());
 
-  return PP_ToBool(plugin_decryption_interface_->AddKey(
+  plugin_decryption_interface_->AddKey(
       pp_instance(),
       StringVar::StringToPPVar(session_id),
       key_array,
-      init_data_array));
+      init_data_array);
+  return true;
 }
 
 bool PluginInstance::CancelKeyRequest(const std::string& session_id) {
   if (!LoadContentDecryptorInterface())
     return false;
-
-  return PP_ToBool(plugin_decryption_interface_->CancelKeyRequest(
+  plugin_decryption_interface_->CancelKeyRequest(
       pp_instance(),
-      StringVar::StringToPPVar(session_id)));
+      StringVar::StringToPPVar(session_id));
+  return true;
 }
 
 bool PluginInstance::Decrypt(
@@ -1529,9 +1531,10 @@ bool PluginInstance::Decrypt(
   DCHECK(!ContainsKey(pending_decryption_cbs_, request_id));
   pending_decryption_cbs_.insert(std::make_pair(request_id, decrypt_cb));
 
-  return PP_ToBool(plugin_decryption_interface_->Decrypt(pp_instance(),
-                                                         encrypted_resource,
-                                                         &block_info));
+  plugin_decryption_interface_->Decrypt(pp_instance(),
+                                        encrypted_resource,
+                                        &block_info);
+  return true;
 }
 
 bool PluginInstance::DecryptAndDecode(
@@ -1550,10 +1553,10 @@ bool PluginInstance::DecryptAndDecode(
   PP_EncryptedBlockInfo block_info;
 
   // TODO(tomfinegan): Store callback and ID in a map, and pass ID to decryptor.
-  return PP_ToBool(
-      plugin_decryption_interface_->DecryptAndDecode(pp_instance(),
-                                                     encrypted_resource,
-                                                     &block_info));
+  plugin_decryption_interface_->DecryptAndDecode(pp_instance(),
+                                                 encrypted_resource,
+                                                 &block_info);
+  return true;
 }
 
 bool PluginInstance::FlashIsFullscreenOrPending() {