[tracing] Change outer/inner size repr. in memory dumps (blink side)

[tracing] Change outer/inner size repr. in memory dumps (blink side)

This CL complements the chromium side crrev.com/1150473004.
This is just getting rid of the confusing outer_size and inner_size
names in favour of just a "size" (which will become the default value
understood by the infrastructure).
Furthermore this will make the trace viewer UI in a better position
when it comes to understand allocator efficiency / overhead (by
just comparing the sizes of nested dumps, instead of having to know
magical names).

BUG=495002
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=196409

[Primiano Tucci (use gerrit), 2015-06-02 11:45:51]

primiano@chromium.org changed reviewers:
+ haraken@chromium.org, ssid@chromium.org

[Primiano Tucci (use gerrit), 2015-06-02 11:45:52]

Very small change, but makes the dumps less confusing...nobody could get
outer/inner so we're just removing them :).

I will land as soon as we get the changes in the ui.

[haraken, 2015-06-02 13:17:19]

LGTM

[Primiano Tucci (use gerrit), 2015-06-03 14:16:00]

The CQ bit was checked by primiano@chromium.org

[Primiano Tucci (use gerrit), 2015-06-03 14:16:00]

The patchset sent to the CQ was uploaded after l-g-t-m from haraken@chromium.org
Link to the patchset: https://codereview.chromium.org/1161953003/#ps40001
(title: "WAR string + operator overload")

[commit-bot: I haz the power, 2015-06-03 14:16:26]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1161953003/40001

[commit-bot: I haz the power, 2015-06-03 15:51:57]

Committed patchset #3 (id:40001) as
https://src.chromium.org/viewvc/blink?view=rev&revision=196409