The compilation on ChromeOS failed for the original CL
(http://crrev.com/2811673002), it is likely that a simple rebase fixes the
issue.

This patchset is equivalent to issue 2740143002 at patchset 14, simply another
rebase took place.

Original description follows:

This CL is a first step to inlining base::ListValue. It is proposed to use an
std::vector<base::Value> as the underlying ListStorage. This CL implements the
change and updates the code accordingly.

BUG=646113
TBR=brettw@chromium.org,rdevlin.cronin@chromium.org,flackr@chromium.org,skym@chromium.org,rsesek@chromium.org,bajones@chromium.org,dbeam@chromium.org,stevenjb@chromium.org
CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_trusty_blink_rel

Review-Url: https://codereview.chromium.org/2809023003
Cr-Commit-Position: refs/heads/master@{#463684}