Replace base::MakeUnique with std::make_unique in extensions/

Bug: 755727
Change-Id: Ia438b1c81aa8c727ccfe04bb7c2987da21003d11
Reviewed-on: https://chromium-review.googlesource.com/627302
Commit-Queue: Jeremy Roman <[email protected]>
Reviewed-by: Devlin <[email protected]>
Cr-Commit-Position: refs/heads/master@{#497124}
diff --git a/extensions/browser/renderer_startup_helper_unittest.cc b/extensions/browser/renderer_startup_helper_unittest.cc
index 2e92234..7cff90d 100644
--- a/extensions/browser/renderer_startup_helper_unittest.cc
+++ b/extensions/browser/renderer_startup_helper_unittest.cc
@@ -28,13 +28,13 @@
 
   void SetUp() override {
     ExtensionsTest::SetUp();
-    helper_ = base::MakeUnique<RendererStartupHelper>(browser_context());
+    helper_ = std::make_unique<RendererStartupHelper>(browser_context());
     registry_ =
         ExtensionRegistryFactory::GetForBrowserContext(browser_context());
     render_process_host_ =
-        base::MakeUnique<content::MockRenderProcessHost>(browser_context());
+        std::make_unique<content::MockRenderProcessHost>(browser_context());
     incognito_render_process_host_ =
-        base::MakeUnique<content::MockRenderProcessHost>(incognito_context());
+        std::make_unique<content::MockRenderProcessHost>(incognito_context());
     extension_ = CreateExtension("ext_1");
   }