Remove obsolete WebString comment from string_util

Remove obsolete WebString comment from string_util

string_util.h contained the following comment:

  // A convenience adaptor for WebStrings, as they don't convert into
  // StringPieces directly.

prior to the string16 overload of IsStringASCII().

Since r447320 the implicit conversion from WebString to string16 has
been removed so this doesn't work. WebString::containsOnlyASCII() should
be used instead.

BUG=667131
Review-Url: https://codereview.chromium.org/2677013002
Cr-Commit-Position: refs/heads/master@{#448471}
Committed: https://chromium.googlesource.com/chromium/src/+/3db94dc4cd5cc78b799faac1040d843019a9fb9a

[Adam Rice, 2017-02-06 03:59:17]

ricea@chromium.org changed reviewers:
+ kinuko@chromium.org

[Adam Rice, 2017-02-06 03:59:17]

Let me know if you already have a CL in flight to do this and I will delete it.

[kinuko, 2017-02-06 20:50:37]

lgtm!

[Adam Rice, 2017-02-06 22:12:19]

The CQ bit was checked by ricea@chromium.org

[commit-bot: I haz the power, 2017-02-06 22:13:22]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-02-06 22:22:43]

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

[commit-bot: I haz the power, 2017-02-06 22:22:44]

Try jobs failed on following builders:
  chromium_presubmit on master.tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/chromium_presub...)

[Adam Rice, 2017-02-06 22:28:17]

ricea@chromium.org changed reviewers:
+ mark@chromium.org

[Adam Rice, 2017-02-06 22:28:17]

+mark for //base OWNERS.

[Mark Mentovai, 2017-02-06 22:34:34]

LGTM

[Adam Rice, 2017-02-06 22:40:01]

The CQ bit was checked by ricea@chromium.org

[commit-bot: I haz the power, 2017-02-06 22:41:19]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-02-07 00:46:03]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1486420801254390, "parent_rev":
"e7952a26a6078a70081aa24d4d62a0c478badc28", "commit_rev":
"3db94dc4cd5cc78b799faac1040d843019a9fb9a"}

[commit-bot: I haz the power, 2017-02-07 00:46:39]

Description was changed from

==========
Remove obsolete WebString comment from string_util

string_util.h contained the following comment:

  // A convenience adaptor for WebStrings, as they don't convert into
  // StringPieces directly.

prior to the string16 overload of IsStringASCII().

Since r447320 the implicit conversion from WebString to string16 has
been removed so this doesn't work. WebString::containsOnlyASCII() should
be used instead.

BUG=667131
==========

to

==========
Remove obsolete WebString comment from string_util

string_util.h contained the following comment:

  // A convenience adaptor for WebStrings, as they don't convert into
  // StringPieces directly.

prior to the string16 overload of IsStringASCII().

Since r447320 the implicit conversion from WebString to string16 has
been removed so this doesn't work. WebString::containsOnlyASCII() should
be used instead.

BUG=667131

Review-Url: https://codereview.chromium.org/2677013002
Cr-Commit-Position: refs/heads/master@{#448471}
Committed:
https://chromium.googlesource.com/chromium/src/+/3db94dc4cd5cc78b799faac1040d...
==========

[commit-bot: I haz the power, 2017-02-07 00:46:40]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/3db94dc4cd5cc78b799faac1040d...