Enable features API for content shell and webview

content/browser/loader/resource_dispatcher_host_unittest.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 <stddef.h>
 #include <utility>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/feature_list.h"
@@ skipping 925 matching lines @@
     web_contents_observer_.reset(
         new TestWebContentsObserver(web_contents_.get()));
     web_contents_filter_ = new TestFilterSpecifyingChild(
         browser_context_->GetResourceContext(),
         web_contents_->GetRenderProcessHost()->GetID());
     child_ids_.insert(web_contents_->GetRenderProcessHost()->GetID());
 
     base::FeatureList::ClearInstanceForTesting();
     switch (GetParam()) {
       case TestConfig::kDefault:
-        base::FeatureList::InitializeInstance();
+        base::FeatureList::InitializeInstance(std::string(), std::string());
         break;
       case TestConfig::kOptimizeIPCForSmallResourceEnabled: {
         scoped_ptr<base::FeatureList> feature_list(new base::FeatureList);
         feature_list->InitializeFromCommandLine(
             features::kOptimizeIPCForSmallResource.name, std::string());
         base::FeatureList::SetInstance(std::move(feature_list));
         ASSERT_TRUE(base::FeatureList::IsEnabled(
             features::kOptimizeIPCForSmallResource));
         break;
       }
@@ skipping 2872 matching lines @@
   return nullptr;
 }
 
 INSTANTIATE_TEST_CASE_P(
     ResourceDispatcherHostTests,
     ResourceDispatcherHostTest,
     testing::Values(TestConfig::kDefault,
                     TestConfig::kOptimizeIPCForSmallResourceEnabled));
 
 }  // namespace content