Don't create CastNetLog when using Network Service.

This fixes support for --log-net-log when the Network Service is enabled.

Bug: 979838
Change-Id: I86f25ce87584e2f318ddaa99012c876974c85745
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1682887
Commit-Queue: Eric Roman <eroman@chromium.org>
Reviewed-by: Luke Halliwell <halliwell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#677088}

chromecast/browser/cast_browser_main_parts.cc

@@ -67,6 +67,7 @@
 #include "gpu/command_buffer/service/gpu_switches.h"
 #include "media/base/media.h"
 #include "media/base/media_switches.h"
+#include "services/network/public/cpp/features.h"
 #include "services/network/public/cpp/shared_url_loader_factory.h"
 #include "ui/base/ui_base_switches.h"
 #include "ui/gl/gl_switches.h"
@@ -358,7 +359,9 @@ CastBrowserMainParts::CastBrowserMainParts(
       parameters_(parameters),
       cast_content_browser_client_(cast_content_browser_client),
       url_request_context_factory_(url_request_context_factory),
-      net_log_(new CastNetLog()),
+      net_log_(!base::FeatureList::IsEnabled(network::features::kNetworkService)
+                   ? new CastNetLog()
+                   : nullptr),
       media_caps_(new media::MediaCapsImpl()) {
   DCHECK(cast_content_browser_client);
   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();

chromecast/browser/cast_net_log.h

@@ -17,6 +17,8 @@ class FileNetLogObserver;
 
 namespace chromecast {
 
+// TODO(http://crbug.com/904910): Delete this once full switched over to Network
+// Service.
 class CastNetLog : public net::NetLog {
  public:
   CastNetLog();