Revert "Resolve references to "this" the same way as normal variables"

Revert "Resolve references to "this" the same way as normal variables"

... and the following two
"PPC: Resolve references to "this" the same way as normal variables"
"Remove Scope::scope_uses_this_ flag"

R=hablich@chromium.org
BUG=chromium:487289
LOG=N

Committed: https://crrev.com/e24b31f0033f3c9664986f81562622d34b6b0c18
Cr-Commit-Position: refs/heads/master@{#28395}

[Michael Hablich, 2015-05-13 12:42:46]

On 2015/05/13 12:42:24, Yang wrote:

lgtm

[Yang, 2015-05-13 12:45:05]

The CQ bit was checked by yangguo@chromium.org

[commit-bot: I haz the power, 2015-05-13 12:45:10]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1134003003/1

[commit-bot: I haz the power, 2015-05-13 13:30:16]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-05-13 13:30:27]

Patchset 1 (id:??) landed as
https://crrev.com/e24b31f0033f3c9664986f81562622d34b6b0c18
Cr-Commit-Position: refs/heads/master@{#28395}