Remove Create() methods which use MakeGarbageCollected<> in modules/navigatorcontentutils

As advised in [1], this CL removes unnecessary Foo::Create() factory functions
which return an instance created by MakeGarbageCollected<Foo> in
//third_party/blink/renderer/modules/navigatorcontentutils, then this CL makes
the callers use MakeGarbageCollected<Foo> instead of Foo::Create() factory
functions.

[1] https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/iJ1bawbxbWs/vEdfT5QtBgAJ

Bug: 939691
Change-Id: Ib186b8359fc5f72ea26ebfa8587813177d5f13a4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1556862Reviewed-by: Kentaro Hara <haraken@chromium.org>
Commit-Queue: Gyuyoung Kim <gyuyoung@igalia.com>
Cr-Commit-Position: refs/heads/master@{#648584}

third_party/blink/renderer/modules/modules_initializer.cc

@@ -182,7 +182,7 @@ void ModulesInitializer::InstallSupplements(LocalFrame& frame) const {
   ProvideLocalFileSystemTo(frame, std::make_unique<LocalFileSystemClient>());
   NavigatorContentUtils::ProvideTo(
       *frame.DomWindow()->navigator(),
-      NavigatorContentUtilsClient::Create(web_frame));
+      MakeGarbageCollected<NavigatorContentUtilsClient>(web_frame));
 
   ScreenOrientationControllerImpl::ProvideTo(frame);
   if (RuntimeEnabledFeatures::PresentationEnabled())

third_party/blink/renderer/modules/navigatorcontentutils/navigator_content_utils_client.cc

@@ -10,11 +10,6 @@
 
 namespace blink {
 
-NavigatorContentUtilsClient* NavigatorContentUtilsClient::Create(
-    WebLocalFrameImpl* web_frame) {
-  return MakeGarbageCollected<NavigatorContentUtilsClient>(web_frame);
-}
-
 NavigatorContentUtilsClient::NavigatorContentUtilsClient(
     WebLocalFrameImpl* web_frame)
     : web_frame_(web_frame) {}

third_party/blink/renderer/modules/navigatorcontentutils/navigator_content_utils_client.h

@@ -17,8 +17,6 @@ class WebLocalFrameImpl;
 class MODULES_EXPORT NavigatorContentUtilsClient
     : public GarbageCollectedFinalized<NavigatorContentUtilsClient> {
  public:
-  static NavigatorContentUtilsClient* Create(WebLocalFrameImpl*);
-
   explicit NavigatorContentUtilsClient(WebLocalFrameImpl*);
   virtual ~NavigatorContentUtilsClient() = default;