Update SupportsUserData uses with unique_ptr.

content/browser/android/context_selection_client.cc

 // Copyright 2017 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 "content/browser/android/context_selection_client.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "base/bind.h"
+#include "base/memory/ptr_util.h"
 #include "base/supports_user_data.h"
 #include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/web_contents.h"
 #include "jni/ContextSelectionClient_jni.h"
 
 using base::android::AttachCurrentThread;
 using base::android::ConvertUTF16ToJavaString;
 using base::android::JavaParamRef;
 using base::android::ScopedJavaLocalRef;
 
@@ skipping 26 matching lines @@
 }
 
 ContextSelectionClient::ContextSelectionClient(
     JNIEnv* env,
     const base::android::JavaRef<jobject>& obj,
     WebContents* web_contents)
     : java_ref_(env, obj),
       web_contents_(web_contents),
       weak_ptr_factory_(this) {
   DCHECK(!web_contents_->GetUserData(kContextSelectionClientUDKey));
-  web_contents_->SetUserData(kContextSelectionClientUDKey, new UserData(this));
+  web_contents_->SetUserData(kContextSelectionClientUDKey,
+                             base::MakeUnique<UserData>(this));
 }
 
 ContextSelectionClient::~ContextSelectionClient() {
   JNIEnv* env = base::android::AttachCurrentThread();
   ScopedJavaLocalRef<jobject> j_obj = java_ref_.get(env);
   if (!j_obj.is_null()) {
     Java_ContextSelectionClient_onNativeSideDestroyed(
         env, j_obj, reinterpret_cast<intptr_t>(this));
   }
 }
@@ skipping 33 matching lines @@
     Java_ContextSelectionClient_onSurroundingTextReceived(
         env, obj, callback_data, j_text, start, end);
   }
 }
 
 bool RegisterContextSelectionClient(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace content