Android WebView: tidy up library dependencies.

Android WebView: tidy up library dependencies.

The comment in android_webview.gyp about static library dependencies not
being handled correctly is incorrect, and the workaround not necessary:
the problem was just that I wasn't using link_settings correctly. Remove
the workaround and instead add proper dependencies in the places that
actually use cpufeatures and cutils (ashmem). This doesn't change the
generated makefiles but makes more logical sense.

BUG=
R=digit@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=200806

[Torne, 2013-05-08 13:55:18]

Hi David, can you take a look at this since you're the OWNER for
third_party/ashmem now :)

[Torne, 2013-05-17 10:35:47]

ping.. :)

If you just want to rubberstamp this for the ashmem change I can get someone
else to review it "properly".

[digit1, 2013-05-17 11:29:57]

lgtm, sorry I was on vacation last week, and didn't see this (email too large
:-))

[commit-bot: I haz the power, 2013-05-17 11:30:59]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/torne@chromium.org/14753011/1

[Torne, 2013-05-17 13:46:15]

Committed patchset #1 manually as r200806 (presubmit successful).