Revert "[Retry] FileAPI: Add WebFileSystem::resolveURL"

This reverts commit 57d078ecddf58e7eacf821c44e4753eed7216f69.

Transfer tests are failing.
./out/Release/browser_tests --gtest_filter=Transfer*

BUG=none
TBR= nhiroki@chromium.org

Review URL: https://codereview.chromium.org/24594002

git-svn-id: svn://svn.chromium.org/blink/trunk@158327 bbb929c8-8fbe-4397-9dbb-9b2b20218538