Add most missing blink files to .gn files

third_party/WebKit/Source/platform/loader/BUILD.gn

 # Copyright 2017 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.
 
 import("//third_party/WebKit/Source/build/scripts/scripts.gni")
 import("//third_party/WebKit/Source/platform/platform_generated.gni")
 
 make_names("make_platform_loader_generated_fetch_initiator_type_names") {
   in_files = [ "fetch/FetchInitiatorTypeNames.json5" ]
   outputs = [
@@ skipping 40 matching lines @@
     "fetch/ResourceFetcher.cpp",
     "fetch/ResourceFetcher.h",
     "fetch/ResourceLoadInfo.h",
     "fetch/ResourceLoadPriority.h",
     "fetch/ResourceLoadTiming.cpp",
     "fetch/ResourceLoadTiming.h",
     "fetch/ResourceLoader.cpp",
     "fetch/ResourceLoader.h",
     "fetch/ResourceLoaderOptions.h",
     "fetch/ResourceLoadingLog.h",
+    "fetch/ResourceOwner.h",
     "fetch/ResourceRequest.cpp",
     "fetch/ResourceRequest.h",
     "fetch/ResourceResponse.cpp",
     "fetch/ResourceResponse.h",
     "fetch/ResourceStatus.h",
     "fetch/ResourceTimingInfo.cpp",
     "fetch/ResourceTimingInfo.h",
     "fetch/SubstituteData.h",
     "fetch/UniqueIdentifier.cpp",
     "fetch/UniqueIdentifier.h",
@@ skipping 84 matching lines @@
 
   configs += [
     "//third_party/WebKit/Source/wtf:wtf_config",
     "//third_party/WebKit/Source:config",
   ]
 
   deps = [
     "//third_party/WebKit/Source/platform",
   ]
 }