Remove enable_polymer_v08 flag from build

Remove enable_polymer_v08 flag from build

Always build Polymer 0.8 and 0.5. Polymer 0.5 should be removed in M45.

BUG=483080
R=jlklein@chromium.org
TEST=manual

Committed: https://crrev.com/41e9150f4aec3cd3ca2f9078252d24523993edc8
Cr-Commit-Position: refs/heads/master@{#330666}

[michaelpg, 2015-05-19 23:11:43]

michaelpg@chromium.org changed reviewers:
+ oshima@chromium.org

[michaelpg, 2015-05-19 23:11:44]

+oshima@ for ui/resources

[Jeremy Klein, 2015-05-19 23:16:47]

lgtm

Let's also add a TODO or NOTE in the grds that 0.5 stuff will all be removed by
the M45 branch point on June 26th.

[michaelpg, 2015-05-19 23:27:13]

On 2015/05/19 23:16:47, Jeremy Klein wrote:
> lgtm
> 
> Let's also add a TODO or NOTE in the grds that 0.5 stuff will all be removed
by
> the M45 branch point on June 26th.

Done.

[michaelpg, 2015-05-19 23:27:17]

The CQ bit was checked by michaelpg@chromium.org

[michaelpg, 2015-05-19 23:27:17]

The patchset sent to the CQ was uploaded after l-g-t-m from jlklein@chromium.org
Link to the patchset: https://codereview.chromium.org/1134753009/#ps40001
(title: "add todo")

[oshima, 2015-05-19 23:33:05]

lgtm

[commit-bot: I haz the power, 2015-05-20 00:21:43]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1134753009/40001

[commit-bot: I haz the power, 2015-05-20 01:16:29]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2015-05-20 01:22:56]

Patchset 3 (id:??) landed as
https://crrev.com/41e9150f4aec3cd3ca2f9078252d24523993edc8
Cr-Commit-Position: refs/heads/master@{#330666}