Generate gm/Android.mk, minus JSON.

Generate gm/Android.mk, minus JSON.

When running gyp_to_android.py, generate the makefile for gm.

For now, remove json functionality and do not depend on json. This
allows us to build and run until solving skbug.com/2448.

gm/gm_expectations.cpp:
gm/gm_expectations.h:
gm/gmmain.cpp:
Remove all json functionality when SK_BUILD_JSON_WRITER is not defined.
This flag is not defined when SK_BUILD_FOR_ANDROID is defined.

gyp/gm.gyp:
Depend on skia and cutils.

platform_tools/android/bin/gyp_to_android.py:
Generate gm/Android.mk.

platform_tools/android/gyp_gen/makefile_writer.py:
Build gm/Android.mk when building external/skia.

Depends on https://codereview.chromium.org/282053002/

BUG=skia:2447
BUG=skia:2448
Committed: http://code.google.com/p/skia/source/detail?r=14767

[scroggo, 2014-05-14 21:20:02]

Elliot, sorry to be so invasive on your gm files! I hope to ultimately get this
building with Json features as well, but this lets me get this up and running
sooner.

https://codereview.chromium.org/281303003/diff/1/Android.mk
File Android.mk (right):

https://codereview.chromium.org/281303003/diff/1/Android.mk#newcode4
Android.mk:4: # THIS FILE IS AUTOGENERATED BY GYP_TO_ANDROID.PY. DO NOT EDIT.
As usual, Android.mk files are for reference only. They show how these files
will look different in Android's fork.

[epoger, 2014-05-14 21:36:12]

lgtm

[scroggo, 2014-05-16 17:47:49]

The CQ bit was checked by scroggo@google.com

[commit-bot: I haz the power, 2014-05-16 17:48:06]

CQ is trying da patch. Follow status at
 https://skia-tree-status.appspot.com/cq/scroggo@google.com/281303003/60001

[commit-bot: I haz the power, 2014-05-16 17:56:46]

Change committed as 14767