AW NS: remove references to kNetworkService

No change to logic. This removes obsolete references to kNetworkService
now that this feature is enabled by default. This cleans up the
corresponding include macros as well.

Bug: 989104
Test: run_android_webview_unittests (tests still pass)
Change-Id: Icf4f2d5821c90f95fc1cd7f3619355f8ff8c4ba0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1737821
Commit-Queue: Richard Coles <torne@chromium.org>
Auto-Submit: Nate Fischer <ntfschr@chromium.org>
Reviewed-by: Richard Coles <torne@chromium.org>
Cr-Commit-Position: refs/heads/master@{#685225}

android_webview/browser/aw_browser_context.cc

@@ -57,7 +57,6 @@
 #include "media/mojo/buildflags.h"
 #include "net/proxy_resolution/proxy_config_service_android.h"
 #include "net/proxy_resolution/proxy_resolution_service.h"
-#include "services/network/public/cpp/features.h"
 #include "services/preferences/tracked/segregated_pref_store.h"
 
 using base::FilePath;

android_webview/renderer/aw_content_renderer_client.cc

@@ -39,7 +39,6 @@
 #include "content/public/renderer/render_view.h"
 #include "net/base/escape.h"
 #include "net/base/net_errors.h"
-#include "services/network/public/cpp/features.h"
 #include "services/service_manager/public/cpp/connector.h"
 #include "services/service_manager/public/cpp/interface_provider.h"
 #include "third_party/blink/public/platform/web_string.h"