Pull new GN, update toolchain definitions

Pull new GN, update toolchain definitions

This pulls buildtools to get GN 290714 and updates to the new style of toolchain definitions in that revision.

Unfortunately, this new version doesn't support getting the outputs of excutables, which made the android unit test template a bit less automatic. We can consider how to best fix this in the future.

R=jamesr@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=290894

[jamesr, 2014-08-20 00:48:29]

ERROR at //build/toolchain/gcc_toolchain.gni:88:9: Assignment had no effect.
        "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o",
        ^------------------------------------------------------------------
You set the variable "outputs" here and it was unused before it went
out of scope.
See //build/toolchain/linux/BUILD.gn:16:1: whence it was called.
gcc_toolchain("arm") {
^---------------------


le sad

[brettw, 2014-08-20 04:46:03]

On 2014/08/20 00:48:29, jamesr wrote:
> ERROR at //build/toolchain/gcc_toolchain.gni:88:9: Assignment had no effect.
>         "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o",
>         ^------------------------------------------------------------------
> You set the variable "outputs" here and it was unused before it went
> out of scope.
> See //build/toolchain/linux/BUILD.gn:16:1: whence it was called.
> gcc_toolchain("arm") {
> ^---------------------
> 
> 
> le sad

That's weird because that's the error you get from the old version. I'll have to
look at it.

[brettw, 2014-08-20 04:46:04]

On 2014/08/20 00:48:29, jamesr wrote:
> ERROR at //build/toolchain/gcc_toolchain.gni:88:9: Assignment had no effect.
>         "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o",
>         ^------------------------------------------------------------------
> You set the variable "outputs" here and it was unused before it went
> out of scope.
> See //build/toolchain/linux/BUILD.gn:16:1: whence it was called.
> gcc_toolchain("arm") {
> ^---------------------
> 
> 
> le sad

That's weird because that's the error you get from the old version. I'll have to
look at it.

[jamesr, 2014-08-20 19:38:27]

lgtm

https://codereview.chromium.org/485833003/diff/200001/build/toolchain/gcc_too...
File build/toolchain/gcc_toolchain.gni (right):

https://codereview.chromium.org/485833003/diff/200001/build/toolchain/gcc_too...
build/toolchain/gcc_toolchain.gni:129: # These variables are not build into GN
but are helpers that implement
built

https://codereview.chromium.org/485833003/diff/200001/build/toolchain/gcc_too...
build/toolchain/gcc_toolchain.gni:132: # existing .TOC file, overwrite it,
oterwise, don't change it.
otherwise

[brettw, 2014-08-20 19:39:49]

Committed patchset #11 manually as 290894 (presubmit successful).