Allow startup with missing V8 snapshot file.

content/test/content_test_launcher.cc

 // Copyright (c) 2012 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/public/test/test_launcher.h"
 
 #include "base/base_paths.h"
 #include "base/command_line.h"
 #include "base/debug/stack_trace.h"
 #include "base/i18n/icu_util.h"
@@ skipping 40 matching lines @@
   ~ContentBrowserTestSuite() override {}
 
  protected:
   void Initialize() override {
 #if defined(OS_ANDROID)
     base::i18n::AllowMultipleInitializeCallsForTesting();
     base::i18n::InitializeICU();
 
 #ifdef V8_USE_EXTERNAL_STARTUP_DATA
     gin::V8Initializer::LoadV8Snapshot();
+    gin::V8Initializer::LoadV8Natives();
 #endif
 
     // This needs to be done before base::TestSuite::Initialize() is called,
     // as it also tries to set MessagePumpForUIFactory.
     if (!base::MessageLoop::InitMessagePumpForUIFactory(
             &CreateMessagePumpForUI))
       VLOG(0) << "MessagePumpForUIFactory already set, unable to override.";
 
     // For all other platforms, we call ContentMain for browser tests which goes
     // through the normal browser initialization paths. For Android, we must set
@@ skipping 50 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(ContentTestLauncherDelegate);
 };
 
 }  // namespace content
 
 int main(int argc, char** argv) {
   int default_jobs = std::max(1, base::SysInfo::NumberOfProcessors() / 2);
   content::ContentTestLauncherDelegate launcher_delegate;
   return LaunchTests(&launcher_delegate, default_jobs, argc, argv);
 }