Move {next,previous}PositionOf() to EditingUtilities.{cpp,h} from Position.{cpp,h}

Move {next,previous}PositionOf() to EditingUtilities.{cpp,h} from Position.{cpp,h}

This patch moves |{next,previous}PositionOf()| to "EditingUtilities.{cpp,h}"
from "Position.{cpp,h}" to simplify "Position.{cpp,h}" for improving code
health since |{next,previous}PositionOf()| don't depend of implementation of
|PositionAlgorithm| template class.

BUG=518738
TEST=n/a; no behavior changes

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=201033

[yosin_UTC9, 2015-08-21 10:45:50]

yosin@chromium.org changed reviewers:
+ keishi@chromium.org

[yosin_UTC9, 2015-08-21 10:46:58]

PTAL

Sorry, this patch contains changes in http://crrev.com/1305963003, which
introduce {next,previous}PositionOf() in "Position.cpp".

This patch just moves them to EditingUtilities.cpp.

[yosin_UTC9, 2015-08-21 10:47:25]

I'll commit this patch after http://crrev.com/1305963003

[keishi, 2015-08-21 11:07:18]

LGTM

[yosin_UTC9, 2015-08-21 14:06:30]

The CQ bit was checked by yosin@chromium.org

[commit-bot: I haz the power, 2015-08-21 14:06:38]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1310533002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1310533002/1

[commit-bot: I haz the power, 2015-08-21 14:08:47]

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

[commit-bot: I haz the power, 2015-08-21 14:08:48]

Try jobs failed on following builders:
  mac_chromium_rel_ng on tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_...)

[yosin_UTC9, 2015-08-21 14:10:28]

The CQ bit was unchecked by yosin@chromium.org

[yosin_UTC9, 2015-08-21 14:44:38]

The CQ bit was checked by yosin@chromium.org

[yosin_UTC9, 2015-08-21 14:44:48]

The CQ bit was unchecked by yosin@chromium.org

[yosin_UTC9, 2015-08-21 18:32:59]

The CQ bit was checked by yosin@chromium.org

[commit-bot: I haz the power, 2015-08-21 18:33:25]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1310533002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1310533002/1

[commit-bot: I haz the power, 2015-08-21 18:36:03]

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

[commit-bot: I haz the power, 2015-08-21 18:36:04]

Try jobs failed on following builders:
  mac_chromium_rel_ng on tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_...)

[yosin_UTC9, 2015-08-21 18:58:57]

The CQ bit was checked by yosin@chromium.org

[yosin_UTC9, 2015-08-21 18:58:57]

The patchset sent to the CQ was uploaded after l-g-t-m from keishi@chromium.org
Link to the patchset: https://codereview.chromium.org/1310533002/#ps20001
(title: "2015-08-22T03:58:24 Rebase")

[commit-bot: I haz the power, 2015-08-21 18:59:32]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1310533002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1310533002/20001

[commit-bot: I haz the power, 2015-08-21 22:03:27]

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

[commit-bot: I haz the power, 2015-08-21 22:03:28]

Failed to apply patch for Source/core/editing/PositionTest.cpp:
While running patch -p1 --forward --force --no-backup-if-mismatch;
  patching file Source/core/editing/PositionTest.cpp
  Hunk #1 FAILED at 6.
  1 out of 1 hunk FAILED -- saving rejects to file
Source/core/editing/PositionTest.cpp.rej

Patch:       Source/core/editing/PositionTest.cpp
Index: Source/core/editing/PositionTest.cpp
diff --git a/Source/core/editing/PositionTest.cpp
b/Source/core/editing/PositionTest.cpp
index
c932b69fbaa101bf124a801b8dcade57c56475dd..1103fe9c35dfdd970f092325b28e35f8037b12f8
100644
--- a/Source/core/editing/PositionTest.cpp
+++ b/Source/core/editing/PositionTest.cpp
@@ -6,6 +6,7 @@
 #include "core/editing/Position.h"
 
 #include "core/editing/EditingTestBase.h"
+#include "core/editing/EditingUtilities.h"
 
 namespace blink {

[commit-bot: I haz the power, 2015-08-21 22:03:34]

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

[yosin_UTC9, 2015-08-22 00:42:41]

The CQ bit was checked by yosin@chromium.org

[yosin_UTC9, 2015-08-22 00:42:41]

The patchset sent to the CQ was uploaded after l-g-t-m from keishi@chromium.org
Link to the patchset: https://codereview.chromium.org/1310533002/#ps40001
(title: "2015-08-22T09:42:03")

[commit-bot: I haz the power, 2015-08-22 00:42:50]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1310533002/40001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1310533002/40001

[commit-bot: I haz the power, 2015-08-22 01:29:50]

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

[commit-bot: I haz the power, 2015-08-22 01:29:51]

Try jobs failed on following builders:
  chromeos_amd64-generic_chromium_compile_only_ng on tryserver.chromium.linux
(JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/chromeos_amd64-...)

[yosin_UTC9, 2015-08-22 01:31:20]

The CQ bit was checked by yosin@chromium.org

[commit-bot: I haz the power, 2015-08-22 01:31:28]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1310533002/40001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1310533002/40001

[commit-bot: I haz the power, 2015-08-22 01:50:48]

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

[commit-bot: I haz the power, 2015-08-22 01:50:49]

Try jobs failed on following builders:
  chromeos_x86-generic_chromium_compile_only_ng on tryserver.chromium.linux
(JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/chromeos_x86-ge...)

[yosin_UTC9, 2015-08-22 01:52:48]

The CQ bit was checked by yosin@chromium.org

[commit-bot: I haz the power, 2015-08-22 01:53:07]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1310533002/40001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1310533002/40001

[commit-bot: I haz the power, 2015-08-22 02:45:56]

Committed patchset #3 (id:40001) as
https://src.chromium.org/viewvc/blink?view=rev&revision=201033