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

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/netinfo, 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: Ica09e05246b9a8e830498c4fb2c5be5d836d59b1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1556958Reviewed-by: Kentaro Hara <haraken@chromium.org>
Commit-Queue: Gyuyoung Kim <gyuyoung@igalia.com>
Cr-Commit-Position: refs/heads/master@{#648583}

third_party/blink/renderer/modules/netinfo/navigator_network_information.cc

@@ -42,7 +42,7 @@ NetworkInformation* NavigatorNetworkInformation::connection(
 NetworkInformation* NavigatorNetworkInformation::connection() {
   if (!connection_ && GetFrame()) {
     DCHECK(GetFrame()->DomWindow());
-    connection_ = NetworkInformation::Create(
+    connection_ = MakeGarbageCollected<NetworkInformation>(
         GetFrame()->DomWindow()->GetExecutionContext());
   }
   return connection_.Get();

third_party/blink/renderer/modules/netinfo/network_information.cc

@@ -73,10 +73,6 @@ String GetConsoleLogStringForWebHoldback() {
 
 }  // namespace
 
-NetworkInformation* NetworkInformation::Create(ExecutionContext* context) {
-  return MakeGarbageCollected<NetworkInformation>(context);
-}
-
 NetworkInformation::~NetworkInformation() {
   DCHECK(!IsObserving());
 }

third_party/blink/renderer/modules/netinfo/network_information.h

@@ -27,8 +27,6 @@ class NetworkInformation final
   DEFINE_WRAPPERTYPEINFO();
 
  public:
-  static NetworkInformation* Create(ExecutionContext*);
-
   explicit NetworkInformation(ExecutionContext*);
   ~NetworkInformation() override;
 

third_party/blink/renderer/modules/netinfo/worker_navigator_network_information.cc

@@ -57,7 +57,7 @@ NetworkInformation* WorkerNavigatorNetworkInformation::connection(
     ExecutionContext* context) {
   DCHECK(context);
   if (!connection_)
-    connection_ = NetworkInformation::Create(context);
+    connection_ = MakeGarbageCollected<NetworkInformation>(context);
   return connection_.Get();
 }