Remove legacy SkLayerRasterizer flag for Android.

Android's uses of SkLayerRasterizer have been cleaned up and no longer require
the legacy API. Remove the flag for Android.
We still have to keep the legacy API around until Mozilla have cleaned up their
uses.

BUG=skia:2187
R=reed@google.com, djsollen@google.com

Author: dominikg@chromium.org

Review URL: https://codereview.chromium.org/279383006

git-svn-id: http://skia.googlecode.com/svn/trunk@14710 2bbb7eff-a529-9590-31e7-b0007b416f81

gyp/common_conditions.gypi

@@ -299,8 +299,6 @@
         'SK_DEFAULT_FONT_CACHE_LIMIT   (768 * 1024)',
         'SK_ATOMICS_PLATFORM_H "../../src/ports/SkAtomics_android.h"',
         'SK_MUTEX_PLATFORM_H "../../src/ports/SkMutex_pthread.h"',
-        # FIXME: b/13729784: Need to rework LayerRasterizer.cpp
-        'SK_SUPPORT_LEGACY_LAYERRASTERIZER_API',
         # Still need to switch Android to the new name for N32.
         'kNative_8888_SkColorType kN32_SkColorType',
         'SK_SUPPORT_LEGACY_PICTURE_CAN_RECORD',