Switch SupportsUserData uses to use unique_ptr.

extensions/renderer/native_extension_bindings_system.cc

 // 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.
 
 #include "extensions/renderer/native_extension_bindings_system.h"
 
 #include "base/command_line.h"
 #include "base/memory/ptr_util.h"
 #include "content/public/common/console_message_level.h"
 #include "content/public/common/content_switches.h"
@@ skipping 352 matching lines @@
 void NativeExtensionBindingsSystem::DidCreateScriptContext(
     ScriptContext* context) {
   v8::Isolate* isolate = context->isolate();
   v8::HandleScope handle_scope(isolate);
   v8::Local<v8::Context> v8_context = context->v8_context();
   gin::PerContextData* per_context_data = gin::PerContextData::From(v8_context);
   DCHECK(per_context_data);
   DCHECK(!per_context_data->GetUserData(kBindingsSystemPerContextKey));
   auto data = base::MakeUnique<BindingsSystemPerContextData>(
       weak_factory_.GetWeakPtr());
-  per_context_data->SetUserData(kBindingsSystemPerContextKey, data.release());
+  per_context_data->SetUserData(kBindingsSystemPerContextKey, std::move(data));
 
   if (get_internal_api_.IsEmpty()) {
     get_internal_api_.Set(
         isolate, v8::FunctionTemplate::New(
                      isolate, &NativeExtensionBindingsSystem::GetInternalAPI,
                      v8::Local<v8::Value>(), v8::Local<v8::Signature>(), 0,
                      v8::ConstructorBehavior::kThrow));
   }
 
   // Note: it's a shame we can't delay this (until, say, we knew an API would
@@ skipping 287 matching lines @@
     v8::Local<v8::Value>* binding_util_out) {
   gin::Handle<APIBindingJSUtil> handle = gin::CreateHandle(
       context->GetIsolate(),
       new APIBindingJSUtil(
           api_system_.type_reference_map(), api_system_.request_handler(),
           api_system_.event_handler(), base::Bind(&CallJsFunction)));
   *binding_util_out = handle.ToV8();
 }
 
 }  // namespace extensions