Convert //ios from scoped_ptr to std::unique_ptr.

ios/web/web_state/ui/wk_web_view_configuration_provider_unittest.mm

 // 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.
 
 #import "ios/web/web_state/ui/wk_web_view_configuration_provider.h"
 
 #import <WebKit/WebKit.h>
 
 #import "base/ios/weak_nsobject.h"
+#include "base/memory/ptr_util.h"
 #include "ios/web/public/test/scoped_testing_web_client.h"
 #include "ios/web/public/test/test_browser_state.h"
 #include "ios/web/public/web_client.h"
 #import "ios/web/web_state/js/page_script_util.h"
 #import "ios/web/web_state/ui/crw_wk_script_message_router.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/gtest_mac.h"
 #include "testing/platform_test.h"
 
 namespace web {
 namespace {
 
 class WKWebViewConfigurationProviderTest : public PlatformTest {
  public:
   WKWebViewConfigurationProviderTest()
-      : web_client_(make_scoped_ptr(new web::WebClient)) {}
+      : web_client_(base::WrapUnique(new web::WebClient)) {}
 
  protected:
   // Returns WKWebViewConfigurationProvider associated with |browser_state_|.
   WKWebViewConfigurationProvider& GetProvider() {
     return GetProvider(&browser_state_);
   }
   // Returns WKWebViewConfigurationProvider for given |browser_state|.
   WKWebViewConfigurationProvider& GetProvider(
       BrowserState* browser_state) const {
     return WKWebViewConfigurationProvider::FromBrowserState(browser_state);
@@ skipping 101 matching lines @@
   NSArray* scripts = config.userContentController.userScripts;
   EXPECT_EQ(1U, scripts.count);
   NSString* early_script = GetEarlyPageScript();
   // |earlyScript| is a substring of |userScripts|. The latter wraps the
   // former with "if (!injected)" check to avoid double injections.
   EXPECT_LT(0U, [[scripts[0] source] rangeOfString:early_script].length);
 }
 
 }  // namespace
 }  // namespace web