Make SameThreadTask/CrossThreadTask internal and remove platform/Task.h

Make SameThreadTask/CrossThreadTask internal and remove platform/Task.h

This CL moves SameThreadTask/CrossThreadTask to
Source/platform/WebTaskRunner.cpp so that these classes are used only just
before tasks are posted to WebTaskRunner.

To do this, SameThreadTask in CanvasAsyncBlobCreator is replaced with
SameThreadClosure.

BUG=478194
Committed: https://crrev.com/4d8a25ed0fda8ac6203a5b25fbb7b9e2fae42971
Cr-Commit-Position: refs/heads/master@{#394051}

[hiroshige, 2016-05-13 07:50:42]

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

[commit-bot: I haz the power, 2016-05-13 07:51:05]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1977773002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1977773002/1

[hiroshige, 2016-05-13 07:56:21]

Description was changed from

==========
Make SameThreadTask/CrossThreadTask internal and remove platform/Task.h

BUG=
==========

to

==========
Make SameThreadTask/CrossThreadTask internal and remove platform/Task.h

This CL moves SameThreadTask/CrossThreadTask to
Source/platform/WebTaskRunner.cpp so that these classes are used only just
before tasks are posted to WebTaskRunner.

To do this, SameThreadTask in CanvasAsyncBlobCreator is replaced with
SameThreadClosure.

BUG=478194
==========

[hiroshige, 2016-05-13 08:23:22]

hiroshige@chromium.org changed reviewers:
+ haraken@chromium.org, kinuko@chromium.org, tzik@chromium.org

[hiroshige, 2016-05-13 08:23:22]

PTAL.

[tzik, 2016-05-13 09:06:54]

lgtm

[haraken, 2016-05-13 09:11:01]

LGTM

[commit-bot: I haz the power, 2016-05-13 09:26:46]

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

[commit-bot: I haz the power, 2016-05-13 09:26:47]

Dry run: This issue passed the CQ dry run.

[kinuko, 2016-05-13 14:13:27]

lgtm

[hiroshige, 2016-05-17 02:53:11]

The CQ bit was checked by hiroshige@chromium.org

[commit-bot: I haz the power, 2016-05-17 02:53:35]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1977773002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1977773002/1

[commit-bot: I haz the power, 2016-05-17 02:55:44]

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

[commit-bot: I haz the power, 2016-05-17 02:55:45]

Try jobs failed on following builders:
  ios-device on tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/ios-device/builds...)
  ios-simulator on tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/ios-simulator/bui...)
  ios-simulator-gn on tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/ios-simulator-gn/...)

[hiroshige, 2016-05-17 03:08:10]

The CQ bit was checked by hiroshige@chromium.org

[hiroshige, 2016-05-17 03:08:10]

The patchset sent to the CQ was uploaded after l-g-t-m from
haraken@chromium.org, kinuko@chromium.org, tzik@chromium.org
Link to the patchset: https://codereview.chromium.org/1977773002/#ps20001
(title: "Rebase. Use DCHECK.")

[commit-bot: I haz the power, 2016-05-17 03:08:33]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1977773002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1977773002/20001

[commit-bot: I haz the power, 2016-05-17 04:44:02]

Description was changed from

==========
Make SameThreadTask/CrossThreadTask internal and remove platform/Task.h

This CL moves SameThreadTask/CrossThreadTask to
Source/platform/WebTaskRunner.cpp so that these classes are used only just
before tasks are posted to WebTaskRunner.

To do this, SameThreadTask in CanvasAsyncBlobCreator is replaced with
SameThreadClosure.

BUG=478194
==========

to

==========
Make SameThreadTask/CrossThreadTask internal and remove platform/Task.h

This CL moves SameThreadTask/CrossThreadTask to
Source/platform/WebTaskRunner.cpp so that these classes are used only just
before tasks are posted to WebTaskRunner.

To do this, SameThreadTask in CanvasAsyncBlobCreator is replaced with
SameThreadClosure.

BUG=478194
==========

[commit-bot: I haz the power, 2016-05-17 04:44:03]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-05-17 04:44:53]

Description was changed from

==========
Make SameThreadTask/CrossThreadTask internal and remove platform/Task.h

This CL moves SameThreadTask/CrossThreadTask to
Source/platform/WebTaskRunner.cpp so that these classes are used only just
before tasks are posted to WebTaskRunner.

To do this, SameThreadTask in CanvasAsyncBlobCreator is replaced with
SameThreadClosure.

BUG=478194
==========

to

==========
Make SameThreadTask/CrossThreadTask internal and remove platform/Task.h

This CL moves SameThreadTask/CrossThreadTask to
Source/platform/WebTaskRunner.cpp so that these classes are used only just
before tasks are posted to WebTaskRunner.

To do this, SameThreadTask in CanvasAsyncBlobCreator is replaced with
SameThreadClosure.

BUG=478194

Committed: https://crrev.com/4d8a25ed0fda8ac6203a5b25fbb7b9e2fae42971
Cr-Commit-Position: refs/heads/master@{#394051}
==========

[commit-bot: I haz the power, 2016-05-17 04:44:54]

Patchset 2 (id:??) landed as
https://crrev.com/4d8a25ed0fda8ac6203a5b25fbb7b9e2fae42971
Cr-Commit-Position: refs/heads/master@{#394051}