Add BUILD.gn rules to compile third_party/class-dump.

Add BUILD.gn rules to compile third_party/class-dump.

Add third_party/class-dump/BUILD.gn to build class-dump as a host tool as
part of the iOS build.

Create a template "class_dump" (in third_party/class-dump/class-dump.gni)
to simplify the execution of the class-dump tool on given framework. This
required converting testing/iossim/redirect-stdout.sh to a python script
as gn can only invokes python script.

TBR=rohitrao@chromium.org
BUG=594519
Committed: https://crrev.com/6b121e47561bb4dd582adff12146655645368639
Cr-Commit-Position: refs/heads/master@{#381687}

[sdefresne, 2016-03-15 14:03:37]

sdefresne@chromium.org changed reviewers:
+ dpranke@chromium.org, rohitrao@chromium.org

[sdefresne, 2016-03-15 14:03:38]

dpranke: Please take a look.
rohitrao: OWNERS approval.

[Dirk Pranke, 2016-03-16 01:25:17]

lgtm

[sdefresne, 2016-03-16 11:09:18]

Description was changed from

==========
Add BUILD.gn rules to compile third_party/class-dump.

Add third_party/class-dump/BUILD.gn to build class-dump as a host tool as
part of the iOS build.

Create a template "class_dump" (in third_party/class-dump/class-dump.gni)
to simplify the execution of the class-dump tool on given framework. This
required converting testing/iossim/redirect-stdout.sh to a python script
as gn can only invokes python script.

BUG=594519
==========

to

==========
Add BUILD.gn rules to compile third_party/class-dump.

Add third_party/class-dump/BUILD.gn to build class-dump as a host tool as
part of the iOS build.

Create a template "class_dump" (in third_party/class-dump/class-dump.gni)
to simplify the execution of the class-dump tool on given framework. This
required converting testing/iossim/redirect-stdout.sh to a python script
as gn can only invokes python script.

TBR=rohitrao@chromium.org
BUG=594519
==========

[sdefresne, 2016-03-17 10:41:09]

The CQ bit was checked by sdefresne@chromium.org

[sdefresne, 2016-03-17 10:41:10]

The patchset sent to the CQ was uploaded after l-g-t-m from dpranke@chromium.org
Link to the patchset: https://codereview.chromium.org/1806523002/#ps60001
(title: "Use ${host_toolchain} instead of //build/toolchain/mac:clang_x64")

[commit-bot: I haz the power, 2016-03-17 10:41:15]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1806523002/60001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1806523002/60001

[commit-bot: I haz the power, 2016-03-17 10:45:53]

Committed patchset #4 (id:60001)

[commit-bot: I haz the power, 2016-03-17 10:47:21]

Description was changed from

==========
Add BUILD.gn rules to compile third_party/class-dump.

Add third_party/class-dump/BUILD.gn to build class-dump as a host tool as
part of the iOS build.

Create a template "class_dump" (in third_party/class-dump/class-dump.gni)
to simplify the execution of the class-dump tool on given framework. This
required converting testing/iossim/redirect-stdout.sh to a python script
as gn can only invokes python script.

TBR=rohitrao@chromium.org
BUG=594519
==========

to

==========
Add BUILD.gn rules to compile third_party/class-dump.

Add third_party/class-dump/BUILD.gn to build class-dump as a host tool as
part of the iOS build.

Create a template "class_dump" (in third_party/class-dump/class-dump.gni)
to simplify the execution of the class-dump tool on given framework. This
required converting testing/iossim/redirect-stdout.sh to a python script
as gn can only invokes python script.

TBR=rohitrao@chromium.org
BUG=594519

Committed: https://crrev.com/6b121e47561bb4dd582adff12146655645368639
Cr-Commit-Position: refs/heads/master@{#381687}
==========

[commit-bot: I haz the power, 2016-03-17 10:47:22]

Patchset 4 (id:??) landed as
https://crrev.com/6b121e47561bb4dd582adff12146655645368639
Cr-Commit-Position: refs/heads/master@{#381687}