Change signature of OnConnect

ios/web/webui/mojo_facade_unittest.mm

 // Copyright 2016 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.
 
 #import "ios/web/webui/mojo_facade.h"
 
 #include <memory>
 
 #include "base/message_loop/message_loop.h"
 #import "base/mac/scoped_nsobject.h"
@@ skipping 43 matching lines @@
   void Create(const shell::Identity& remote_identity,
               mojo::InterfaceRequest<TestUIHandlerMojo> request) override {}
 };
 
 }  // namespace
 
 // A test fixture to test MojoFacade class.
 class MojoFacadeTest : public WebTest {
  protected:
   MojoFacadeTest() {
-    interface_registry_.reset(new shell::InterfaceRegistry(nullptr));
+    interface_registry_.reset(new shell::InterfaceRegistry);
     interface_registry_->AddInterface(&ui_handler_factory_);
     evaluator_.reset([[OCMockObject
         mockForProtocol:@protocol(CRWJSInjectionEvaluator)] retain]);
     facade_.reset(new MojoFacade(
         interface_registry_.get(),
         static_cast<id<CRWJSInjectionEvaluator>>(evaluator_.get())));
   }
 
   OCMockObject* evaluator() { return evaluator_.get(); }
   MojoFacade* facade() { return facade_.get(); }
@@ skipping 193 matching lines @@
   NSDictionary* message = GetObject(facade()->HandleMojoMessage(GetJson(read)));
   EXPECT_TRUE([message isKindOfClass:[NSDictionary class]]);
   EXPECT_TRUE(message);
   NSArray* expected_message = @[ @9, @2, @216 ];  // 2008 does not fit 8-bit.
   EXPECT_NSEQ(expected_message, message[@"buffer"]);
   EXPECT_FALSE([message[@"handles"] count]);
   EXPECT_EQ(MOJO_RESULT_OK, [message[@"result"] unsignedIntValue]);
 }
 
 }  // namespace web