Remove MicroData implementation

Remove MicroData implementation

Per the discussion on blink-dev we should remove the MicroData implementation.
There's questions of quality, a maintainer, and that no port of WebKit ever
turned it on.

See: https://groups.google.com/a/chromium.org/forum/?fromgroups=#!topic/blink-dev/b54nW_mGSVU

R=ojan@chromium.org,abarth@chromium.org

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=148315

[abarth-chromium, 2013-04-12 20:47:44]

lgtm

[commit-bot: I haz the power, 2013-04-12 22:06:10]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/esprehn@chromium.org/14028014/4001

[commit-bot: I haz the power, 2013-04-12 22:24:19]

Sorry for I got bad news for ya.
Compile failed with a clobber build on linux_layout_rel.
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=linux_layo...
Your code is likely broken or HEAD is junk. Please ensure your
code is not broken then alert the build sheriffs.
Look at the try server FAQ for more details.

[commit-bot: I haz the power, 2013-04-12 22:35:34]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/esprehn@chromium.org/14028014/4001

[commit-bot: I haz the power, 2013-04-12 22:53:08]

Retried try job too often on linux_layout_rel for step(s) test_shell_tests,
webkit_lint, webkit_tests, webkit_unit_tests
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=linux_layo...

[esprehn, 2013-04-12 23:11:11]

Committed patchset #2 manually as r148315 (presubmit successful).