Add a feature flag for network service and about:flags entry for it.

content/browser/renderer_host/render_process_host_impl.cc

 // Copyright 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.
 
 // Represents the browser side of the browser <--> renderer communication
 // channel. There will be one RenderProcessHost per renderer process.
 
 #include "content/browser/renderer_host/render_process_host_impl.h"
 
 #include <algorithm>
@@ skipping 1672 matching lines @@
   GetContentClient()->browser()->ExposeInterfacesToRenderer(
       registry.get(), associated_interfaces_.get(), this);
   static_cast<AssociatedInterfaceRegistry*>(associated_interfaces_.get())
       ->AddInterface(base::Bind(&RenderProcessHostImpl::BindRouteProvider,
                                 base::Unretained(this)));
 
   AddUIThreadInterface(registry.get(),
                        base::Bind(&RenderProcessHostImpl::CreateRendererHost,
                                   base::Unretained(this)));
 
-  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kEnableNetworkService)) {
+  if (base::FeatureList::IsEnabled(features::kNetworkService)) {
     AddUIThreadInterface(
         registry.get(),
         base::Bind(&RenderProcessHostImpl::CreateURLLoaderFactory,
                    base::Unretained(this)));
   }
 
   if (base::FeatureList::IsEnabled(features::kMojoBlobs)) {
     registry->AddInterface(base::Bind(
         &ChromeBlobStorageContext::BindBlobRegistry,
         base::Unretained(ChromeBlobStorageContext::GetFor(browser_context_))));
@@ skipping 29 matching lines @@
     mojom::AssociatedInterfaceAssociatedRequest request) {
   int32_t routing_id =
       associated_interface_provider_bindings_.dispatch_context();
   IPC::Listener* listener = listeners_.Lookup(routing_id);
   if (listener)
     listener->OnAssociatedInterfaceRequest(name, request.PassHandle());
 }
 
 void RenderProcessHostImpl::GetBlobURLLoaderFactory(
     mojom::URLLoaderFactoryRequest request) {
-  if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kEnableNetworkService)) {
+  if (!base::FeatureList::IsEnabled(features::kNetworkService)) {
     NOTREACHED();
     return;
   }
   storage_partition_impl_->GetBlobURLLoaderFactory()->HandleRequest(
       std::move(request));
 }
 
 void RenderProcessHostImpl::CreateMusGpuRequest(
     const service_manager::BindSourceInfo& source_info,
     ui::mojom::GpuRequest request) {
@@ skipping 33 matching lines @@
 
 void RenderProcessHostImpl::CreateRendererHost(
     const service_manager::BindSourceInfo& source_info,
     mojom::RendererHostRequest request) {
   renderer_host_binding_.Bind(std::move(request));
 }
 
 void RenderProcessHostImpl::CreateURLLoaderFactory(
     const service_manager::BindSourceInfo& source_info,
     mojom::URLLoaderFactoryRequest request) {
-  if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kEnableNetworkService)) {
+  if (!base::FeatureList::IsEnabled(features::kNetworkService)) {
     NOTREACHED();
     return;
   }
   storage_partition_impl_->network_context()->CreateURLLoaderFactory(
       std::move(request), id_);
 }
 
 int RenderProcessHostImpl::GetNextRoutingID() {
   return widget_helper_->GetNextRoutingID();
 }
@@ skipping 481 matching lines @@
     switches::kEnableGPUClientLogging,
     switches::kEnableGpuClientTracing,
     switches::kEnableGpuMemoryBufferVideoFrames,
     switches::kEnableGPUServiceLogging,
     switches::kEnableLowResTiling,
     switches::kEnableMediaSuspend,
     switches::kEnableInbandTextTracks,
     switches::kEnableLCDText,
     switches::kEnableLogging,
     switches::kEnableNetworkInformation,
-    switches::kEnableNetworkService,
     switches::kEnablePinch,
     switches::kEnablePluginPlaceholderTesting,
     switches::kEnablePreciseMemoryInfo,
     switches::kEnablePrintBrowser,
     switches::kEnablePreferCompositingToLCDText,
     switches::kEnableRGBA4444Textures,
     switches::kEnableSkiaBenchmarking,
     switches::kEnableSlimmingPaintV2,
     switches::kEnableSlimmingPaintInvalidation,
     switches::kEnableSmoothScrolling,
@@ skipping 1474 matching lines @@
   LOG(ERROR) << "Terminating render process for bad Mojo message: " << error;
 
   // The ReceivedBadMessage call below will trigger a DumpWithoutCrashing.
   // Capture the error message in a crash key value.
   base::debug::ScopedCrashKey error_key_value("mojo-message-error", error);
   bad_message::ReceivedBadMessage(render_process_id,
                                   bad_message::RPH_MOJO_PROCESS_ERROR);
 }
 
 }  // namespace content