Create core/html/media/ and move auxiliary media files in it.

third_party/WebKit/Source/core/html/BUILD.gn

 # 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("//build/split_static_library.gni")
 import("//third_party/WebKit/Source/core/core.gni")
 
 blink_core_sources("html") {
   split_count = 5
 
   sources = [
-    "AutoplayUmaHelper.cpp",
-    "AutoplayUmaHelper.h",
     "ClassList.cpp",
     "ClassList.h",
     "CollectionItemsCache.h",
     "CollectionType.h",
     "CrossOriginAttribute.cpp",
     "CrossOriginAttribute.h",
     "DocumentNameCollection.cpp",
     "DocumentNameCollection.h",
     "FormAssociated.h",
     "FormData.cpp",
@@ skipping 91 matching lines @@
     "HTMLLegendElement.cpp",
     "HTMLLegendElement.h",
     "HTMLLinkElement.cpp",
     "HTMLLinkElement.h",
     "HTMLMapElement.cpp",
     "HTMLMapElement.h",
     "HTMLMarqueeElement.cpp",
     "HTMLMarqueeElement.h",
     "HTMLMediaElement.cpp",
     "HTMLMediaElement.h",
-    "HTMLMediaElementControlsList.cpp",
-    "HTMLMediaElementControlsList.h",
-    "HTMLMediaSource.cpp",
-    "HTMLMediaSource.h",
     "HTMLMenuElement.cpp",
     "HTMLMenuElement.h",
     "HTMLMenuItemElement.cpp",
     "HTMLMenuItemElement.h",
     "HTMLMetaElement.cpp",
     "HTMLMetaElement.h",
     "HTMLMeterElement.cpp",
     "HTMLMeterElement.h",
     "HTMLModElement.cpp",
     "HTMLModElement.h",
@@ skipping 96 matching lines @@
     "LinkManifest.cpp",
     "LinkManifest.h",
     "LinkRelAttribute.cpp",
     "LinkRelAttribute.h",
     "LinkResource.cpp",
     "LinkResource.h",
     "LinkStyle.cpp",
     "LinkStyle.h",
     "ListedElement.cpp",
     "ListedElement.h",
-    "MediaCustomControlsFullscreenDetector.cpp",
-    "MediaCustomControlsFullscreenDetector.h",
-    "MediaDocument.cpp",
-    "MediaDocument.h",
-    "MediaError.h",
-    "MediaFragmentURIParser.cpp",
-    "MediaFragmentURIParser.h",
     "PluginDocument.cpp",
     "PluginDocument.h",
     "PublicURLManager.cpp",
     "PublicURLManager.h",
     "RadioNodeList.cpp",
     "RadioNodeList.h",
     "RelList.cpp",
     "RelList.h",
     "TextControlElement.cpp",
     "TextControlElement.h",
@@ skipping 113 matching lines @@
     "imports/HTMLImportLoader.h",
     "imports/HTMLImportState.h",
     "imports/HTMLImportStateResolver.cpp",
     "imports/HTMLImportStateResolver.h",
     "imports/HTMLImportTreeRoot.cpp",
     "imports/HTMLImportTreeRoot.h",
     "imports/HTMLImportsController.cpp",
     "imports/HTMLImportsController.h",
     "imports/LinkImport.cpp",
     "imports/LinkImport.h",
+    "media/AutoplayUmaHelper.cpp",
+    "media/AutoplayUmaHelper.h",
+    "media/HTMLMediaElementControlsList.cpp",
+    "media/HTMLMediaElementControlsList.h",
+    "media/HTMLMediaSource.cpp",
+    "media/HTMLMediaSource.h",
+    "media/MediaCustomControlsFullscreenDetector.cpp",
+    "media/MediaCustomControlsFullscreenDetector.h",
+    "media/MediaDocument.cpp",
+    "media/MediaDocument.h",
+    "media/MediaError.h",
+    "media/MediaFragmentURIParser.cpp",
+    "media/MediaFragmentURIParser.h",
     "parser/AtomicHTMLToken.cpp",
     "parser/AtomicHTMLToken.h",
     "parser/BackgroundHTMLInputStream.cpp",
     "parser/BackgroundHTMLInputStream.h",
     "parser/BackgroundHTMLParser.cpp",
     "parser/BackgroundHTMLParser.h",
     "parser/CSSPreloadScanner.cpp",
     "parser/CSSPreloadScanner.h",
     "parser/CompactHTMLToken.cpp",
     "parser/CompactHTMLToken.h",
@@ skipping 143 matching lines @@
     "track/vtt/VTTToken.h",
     "track/vtt/VTTTokenizer.cpp",
     "track/vtt/VTTTokenizer.h",
   ]
 
   configs += [
     # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
     "//build/config/compiler:no_size_t_to_int_warning",
   ]
 }