Allow leveldb to use snappy in WebView.

Allow leveldb to use snappy in WebView.

Snappy was disabled for the WebView build to avoid introducing a new
build dependency but snappy has been added to the WebView build for
other purposes since then; we may as well re-enable it to remove a now
unnecessary difference between the downstream webview build and regular
builds of chromium for Android.

BUG=236780
Committed: https://crrev.com/353779ec8f69d8666cac95bdf7c0a0ecbbbbee6b
Cr-Commit-Position: refs/heads/master@{#308379}

[Torne, 2014-12-15 17:01:16]

torne@chromium.org changed reviewers:
+ jsbell@chromium.org

[jsbell, 2014-12-15 17:27:11]

lgtm

(cc: cmumford in case he sees further areas for simplification)

[Torne, 2014-12-15 17:27:53]

On 2014/12/15 17:27:11, jsbell wrote:
> lgtm
> 
> (cc: cmumford in case he sees further areas for simplification)

This is the only case where use_snappy was ever disabled, so maybe it can be
removed now, but it did exist before we disabled it for WebView so maybe there
was some other reason to allow it to be disabled :)

[Torne, 2014-12-15 17:27:56]

The CQ bit was checked by torne@chromium.org

[commit-bot: I haz the power, 2014-12-15 17:29:22]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/808493002/1

[commit-bot: I haz the power, 2014-12-15 18:54:40]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-12-15 18:56:33]

Patchset 1 (id:??) landed as
https://crrev.com/353779ec8f69d8666cac95bdf7c0a0ecbbbbee6b
Cr-Commit-Position: refs/heads/master@{#308379}