[Extensions] Convert some callers of ModuleSystem::CallModuleMethod

extensions/renderer/display_source_custom_bindings.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "extensions/renderer/display_source_custom_bindings.h"
 
 #include <stdint.h>
 
 #include "base/bind.h"
 #include "content/public/child/v8_value_converter.h"
@@ skipping 214 matching lines @@
   v8::HandleScope handle_scope(isolate);
   v8::Context::Scope context_scope(context()->v8_context());
 
   v8::Local<v8::Value> callback_args[2];
   callback_args[0] = v8::Integer::New(isolate, call_id);
   if (success)
     callback_args[1] = v8::Null(isolate);
   else
     callback_args[1] = v8::String::NewFromUtf8(isolate, error_message.c_str());
 
-  module_system->CallModuleMethod("displaySource", "callCompletionCallback", 2,
-                                  callback_args);
+  module_system->CallModuleMethodSafe("displaySource", "callCompletionCallback",
+                                      2, callback_args);
 }
 
 void DisplaySourceCustomBindings::OnSessionStarted(
     int sink_id,
     int call_id,
     bool success,
     const std::string& error_message) {
   CHECK(GetDisplaySession(sink_id));
   if (!success) {
     // Session has failed to start, removing it.
@@ skipping 50 matching lines @@
 }
 
 void DisplaySourceCustomBindings::OnSessionError(int sink_id,
                                                  DisplaySourceErrorType type,
                                                  const std::string& message) {
   CHECK(GetDisplaySession(sink_id));
   DispatchSessionError(sink_id, type, message);
 }
 
 }  // extensions