Allow startup with missing V8 snapshot file.

components/html_viewer/ax_provider_impl_unittest.cc

 // Copyright 2014 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 "components/html_viewer/ax_provider_impl.h"
 
 #include "base/bind.h"
 #include "base/message_loop/message_loop.h"
 #include "components/html_viewer/blink_platform_impl.h"
 #include "components/scheduler/renderer/renderer_scheduler.h"
@@ skipping 33 matching lines @@
   virtual ~TestWebViewClient() {}
 };
 
 class AxProviderImplTest : public testing::Test {
  public:
   AxProviderImplTest()
       : message_loop_(new base::MessageLoopForUI()),
         renderer_scheduler_(scheduler::RendererScheduler::Create()) {
 #if defined(V8_USE_EXTERNAL_STARTUP_DATA)
     gin::V8Initializer::LoadV8Snapshot();
+    gin::V8Initializer::LoadV8Natives();
 #endif
     blink::initialize(
         new html_viewer::BlinkPlatformImpl(nullptr, renderer_scheduler_.get()));
   }
 
   ~AxProviderImplTest() override {
     renderer_scheduler_->Shutdown();
     message_loop_.reset();
     blink::shutdown();
   }
@@ skipping 124 matching lines @@
                              "",
                              ""));
     }
   }
 
   // TODO(aa): Test bounds.
   // TODO(aa): Test sibling ordering of foo/bar/baz.
 
   view->close();
 }