Replace some Tokenize calls with SplitString.

Replace some Tokenize calls with SplitString.

Tokenize is now a legacy wrapper around a particular variant of SplitString call. I want to remove the Tokenize wrappers.

This patch uses the StringPiece version in obvious cases which saves allocations, and in many places removes the vector temporary in preferences to a range-based for loop.

Committed: https://crrev.com/37fd9d7d258626d3a1bd6db9fc99c97f981c21b1
Cr-Commit-Position: refs/heads/master@{#335856}

[brettw, 2015-06-23 00:54:55]

The CQ bit was checked by brettw@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2015-06-23 00:55:08]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1197243004/20001

[commit-bot: I haz the power, 2015-06-23 01:13:25]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-06-23 01:13:26]

Dry run: Try jobs failed on following builders:
  linux_chromium_gn_chromeos_rel on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[brettw, 2015-06-23 19:23:16]

The CQ bit was checked by brettw@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2015-06-23 19:25:31]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1197243004/40001

[brettw, 2015-06-23 19:27:15]

brettw@chromium.org changed reviewers:
+ yzshen@chromium.org

[commit-bot: I haz the power, 2015-06-23 19:52:53]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-06-23 19:52:55]

Dry run: Try jobs failed on following builders:
  linux_chromium_gn_chromeos_rel on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[yzshen1, 2015-06-23 21:10:34]

On 2015/06/23 19:52:55, commit-bot: I haz the power wrote:
> Dry run: Try jobs failed on following builders:
>   linux_chromium_gn_chromeos_rel on tryserver.chromium.linux (JOB_FAILED,
>
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)


Please fix the try failures.

(And after that LGTM)

[brettw, 2015-06-23 21:18:03]

The CQ bit was checked by brettw@chromium.org

[brettw, 2015-06-23 21:18:03]

The patchset sent to the CQ was uploaded after l-g-t-m from yzshen@chromium.org
Link to the patchset: https://codereview.chromium.org/1197243004/#ps60001
(title: "fixes")

[commit-bot: I haz the power, 2015-06-23 21:21:57]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1197243004/60001

[commit-bot: I haz the power, 2015-06-23 22:13:59]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-06-23 22:14:00]

Exceeded global retry quota

[brettw, 2015-06-23 23:54:23]

The CQ bit was checked by brettw@chromium.org

[brettw, 2015-06-23 23:54:24]

The patchset sent to the CQ was uploaded after l-g-t-m from yzshen@chromium.org
Link to the patchset: https://codereview.chromium.org/1197243004/#ps80001
(title: "Fix android")

[commit-bot: I haz the power, 2015-06-23 23:57:09]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1197243004/80001

[commit-bot: I haz the power, 2015-06-24 02:07:24]

Committed patchset #5 (id:80001)

[commit-bot: I haz the power, 2015-06-24 02:08:22]

Patchset 5 (id:??) landed as
https://crrev.com/37fd9d7d258626d3a1bd6db9fc99c97f981c21b1
Cr-Commit-Position: refs/heads/master@{#335856}