Move more sources from modules.gypi to subdirectories.

third_party/WebKit/Source/modules/fetch/BUILD.gn

Index: third_party/WebKit/Source/modules/fetch/BUILD.gn
diff --git a/third_party/WebKit/Source/modules/fetch/BUILD.gn b/third_party/WebKit/Source/modules/fetch/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..21771bd6c9565434c2154b852dfbe09642eda07e
--- /dev/null
+++ b/third_party/WebKit/Source/modules/fetch/BUILD.gn
@@ -0,0 +1,54 @@
+# Copyright 2016 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/modules/modules.gni")
+
+blink_modules_sources("fetch") {
+  sources = [
+    "Body.cpp",
+    "Body.h",
+    "BodyStreamBuffer.cpp",
+    "BodyStreamBuffer.h",
+    "BytesConsumer.cpp",
+    "BytesConsumer.h",
+    "BytesConsumerForDataConsumerHandle.cpp",
+    "BytesConsumerForDataConsumerHandle.h",
+    "CompositeDataConsumerHandle.cpp",
+    "CompositeDataConsumerHandle.h",
+    "CrossThreadHolder.h",
+    "DataConsumerHandleUtil.cpp",
+    "DataConsumerHandleUtil.h",
+    "DataConsumerTee.cpp",
+    "DataConsumerTee.h",
+    "FetchBlobDataConsumerHandle.cpp",
+    "FetchBlobDataConsumerHandle.h",
+    "FetchDataConsumerHandle.cpp",
+    "FetchDataConsumerHandle.h",
+    "FetchDataLoader.cpp",
+    "FetchDataLoader.h",
+    "FetchFormDataConsumerHandle.cpp",
+    "FetchFormDataConsumerHandle.h",
+    "FetchHeaderList.cpp",
+    "FetchHeaderList.h",
+    "FetchManager.cpp",
+    "FetchManager.h",
+    "FetchRequestData.cpp",
+    "FetchRequestData.h",
+    "FetchResponseData.cpp",
+    "FetchResponseData.h",
+    "GlobalFetch.cpp",
+    "GlobalFetch.h",
+    "Headers.cpp",
+    "Headers.h",
+    "ReadableStreamDataConsumerHandle.cpp",
+    "ReadableStreamDataConsumerHandle.h",
+    "Request.cpp",
+    "Request.h",
+    "RequestInit.cpp",
+    "RequestInit.h",
+    "Response.cpp",
+    "Response.h",
+    "ResponseInit.h",
+  ]
+}