The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/b93eb5b19fbe47b7c0e24d371db6dd2a219c8c94

commit b93eb5b19fbe47b7c0e24d371db6dd2a219c8c94
Author: yoav <yoav@yoav.ws>
Date: Fri Mar 11 09:46:55 2016

Change preload's as values audio/video to media

The spec was changed. This CL aligns the implementation with the spec.

BUG= 593905 

Review URL: https://codereview.chromium.org/1754453002

Cr-Commit-Position: refs/heads/master@{#380588}

[modify] https://crrev.com/b93eb5b19fbe47b7c0e24d371db6dd2a219c8c94/third_party/WebKit/LayoutTests/http/tests/preload/download_resources.html
[modify] https://crrev.com/b93eb5b19fbe47b7c0e24d371db6dd2a219c8c94/third_party/WebKit/LayoutTests/http/tests/preload/onload_event.html
[modify] https://crrev.com/b93eb5b19fbe47b7c0e24d371db6dd2a219c8c94/third_party/WebKit/LayoutTests/http/tests/preload/single_download_preload.html
[modify] https://crrev.com/b93eb5b19fbe47b7c0e24d371db6dd2a219c8c94/third_party/WebKit/Source/core/html/parser/HTMLPreloadScannerTest.cpp
[modify] https://crrev.com/b93eb5b19fbe47b7c0e24d371db6dd2a219c8c94/third_party/WebKit/Source/core/loader/LinkLoader.cpp
[modify] https://crrev.com/b93eb5b19fbe47b7c0e24d371db6dd2a219c8c94/third_party/WebKit/Source/core/loader/LinkLoaderTest.cpp