Add ability to specify a different base dir path to record_wpr

Add ability to specify a different base dir path to record_wpr

Motivation:
Skia has its own set of page sets that are run on our bots. They live in a
directory within Skia's repository. A similar change is going to be made
to skpicture_printer in https://codereview.chromium.org/665193002/

BUG=

Committed: https://crrev.com/01a90f9aae6eeaabd6c5419ca6042ed5a6633162
Cr-Commit-Position: refs/heads/master@{#301140}

[rmistry, 2014-10-22 17:12:23]

rmistry@google.com changed reviewers:
+ ernstm@chromium.org

[ernstm, 2014-10-23 21:21:31]

https://codereview.chromium.org/674523002/diff/40001/tools/telemetry/telemetr...
File tools/telemetry/telemetry/page/record_wpr.py (right):

https://codereview.chromium.org/674523002/diff/40001/tools/telemetry/telemetr...
tools/telemetry/telemetry/page/record_wpr.py:128: base_dir =
self._options.custom_base_dir
Please define a page_set_base_dir here that is either initialized to base_dir or
self._options._page_set_base_dir if that is set.

https://codereview.chromium.org/674523002/diff/40001/tools/telemetry/telemetr...
tools/telemetry/telemetry/page/record_wpr.py:150:
self._parser.add_option('--custom-base-dir', action='store', type='string')
Please rename the option to --page-set-base-dir. This would be consistent with
SkpicturePrinter benchmark and also make it explicit that this just sets the
base dir for page sets, but not for benchmarks.

[rmistry, 2014-10-24 12:17:29]

https://codereview.chromium.org/674523002/diff/40001/tools/telemetry/telemetr...
File tools/telemetry/telemetry/page/record_wpr.py (right):

https://codereview.chromium.org/674523002/diff/40001/tools/telemetry/telemetr...
tools/telemetry/telemetry/page/record_wpr.py:128: base_dir =
self._options.custom_base_dir
On 2014/10/23 21:21:31, ernstm wrote:
> Please define a page_set_base_dir here that is either initialized to base_dir
or
> self._options._page_set_base_dir if that is set.

Done.

https://codereview.chromium.org/674523002/diff/40001/tools/telemetry/telemetr...
tools/telemetry/telemetry/page/record_wpr.py:150:
self._parser.add_option('--custom-base-dir', action='store', type='string')
On 2014/10/23 21:21:31, ernstm wrote:
> Please rename the option to --page-set-base-dir. This would be consistent with
> SkpicturePrinter benchmark and also make it explicit that this just sets the
> base dir for page sets, but not for benchmarks.

Makes sense. Done.

[ernstm, 2014-10-24 16:52:05]

On 2014/10/24 12:17:29, rmistry wrote:
>
https://codereview.chromium.org/674523002/diff/40001/tools/telemetry/telemetr...
> File tools/telemetry/telemetry/page/record_wpr.py (right):
> 
>
https://codereview.chromium.org/674523002/diff/40001/tools/telemetry/telemetr...
> tools/telemetry/telemetry/page/record_wpr.py:128: base_dir =
> self._options.custom_base_dir
> On 2014/10/23 21:21:31, ernstm wrote:
> > Please define a page_set_base_dir here that is either initialized to
base_dir
> or
> > self._options._page_set_base_dir if that is set.
> 
> Done.
> 
>
https://codereview.chromium.org/674523002/diff/40001/tools/telemetry/telemetr...
> tools/telemetry/telemetry/page/record_wpr.py:150:
> self._parser.add_option('--custom-base-dir', action='store', type='string')
> On 2014/10/23 21:21:31, ernstm wrote:
> > Please rename the option to --page-set-base-dir. This would be consistent
with
> > SkpicturePrinter benchmark and also make it explicit that this just sets the
> > base dir for page sets, but not for benchmarks.
> 
> Makes sense. Done.

LGTM

[ernstm, 2014-10-24 16:52:07]

The CQ bit was checked by ernstm@chromium.org

[commit-bot: I haz the power, 2014-10-24 16:52:51]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/674523002/60001

[commit-bot: I haz the power, 2014-10-24 17:49:20]

Committed patchset #4 (id:60001)

[commit-bot: I haz the power, 2014-10-24 17:50:07]

Patchset 4 (id:??) landed as
https://crrev.com/01a90f9aae6eeaabd6c5419ca6042ed5a6633162
Cr-Commit-Position: refs/heads/master@{#301140}