[Android WebView] Don't store unnecessary copy of print_settings in aw_pdf_exporter.

[Android WebView] Don't store unnecessary copy of print_settings in aw_pdf_exporter.

There is no need to keep a copy of the print_settings in aw_pdf_exporter anymore
because it is owned by AwPrintManager now.

BUG=465802
Committed: https://crrev.com/d72d37dfbf6a2c2a7417ce6a6ed5d6231de096a7
Cr-Commit-Position: refs/heads/master@{#342340}

[timvolodine, 2015-07-27 17:16:34]

timvolodine@chromium.org changed reviewers:
+ sgurun@chromium.org

[sgurun-gerrit only, 2015-07-27 18:02:15]

so settings logic was broken then, no?

[timvolodine, 2015-07-27 18:19:48]

On 2015/07/27 18:02:15, sgurun wrote:
> so settings logic was broken then, no?

During the review of the previous refactoring patch Vitaly suggested it was
better to keep the settings in print manager by value instead of by pointer as
it is more obvious regarding lifetime. This patch is just to optimize wrt the
new implementation. Don't think it was really broken before, maybe just a bit
more dangerous ;)

[sgurun-gerrit only, 2015-07-27 23:26:12]

lgtm

[timvolodine, 2015-08-07 12:44:52]

The CQ bit was checked by timvolodine@chromium.org

[commit-bot: I haz the power, 2015-08-07 12:45:23]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1253423003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1253423003/1

[commit-bot: I haz the power, 2015-08-07 13:05:31]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-08-07 13:06:04]

Patchset 1 (id:??) landed as
https://crrev.com/d72d37dfbf6a2c2a7417ce6a6ed5d6231de096a7
Cr-Commit-Position: refs/heads/master@{#342340}