Move builder_spec, [dm|nanobench]_flags, builder_name_schema to recipes

infra/bots/recipe_modules/vars/api.py

Index: infra/bots/recipe_modules/vars/api.py
diff --git a/infra/bots/recipe_modules/vars/api.py b/infra/bots/recipe_modules/vars/api.py
index 69842fb37f744c48e04d39af2fecc70607277b20..9b3b30333cad00439074c1ebec7a31c3d85dbfcc 100644
--- a/infra/bots/recipe_modules/vars/api.py
+++ b/infra/bots/recipe_modules/vars/api.py
@@ -12,6 +12,677 @@ import os
 
 BOTO_CHROMIUM_SKIA_GM = 'chromium-skia-gm.boto'
 
+CONFIG_DEBUG = 'Debug'
+CONFIG_RELEASE = 'Release'
+
+
+def get_gyp_defines(builder_dict):
+  gyp_defs = {}
+
+  # skia_arch_type.
+  if builder_dict['role'] == 'Build':
+    arch = builder_dict['target_arch']
+  elif builder_dict['role'] in ('Housekeeper', 'Infra'):
+    arch = None
+  else:
+    arch = builder_dict['arch']
+
+  arch_types = {
+    'x86':      'x86',
+    'x86_64':   'x86_64',
+    'Arm7':     'arm',
+    'Arm64':    'arm64',
+    'Mips':     'mips32',
+    'Mips64':   'mips64',
+    'MipsDSP2': 'mips32',
+  }
+  if arch in arch_types:
+    gyp_defs['skia_arch_type']  = arch_types[arch]
+
+  # housekeeper: build shared lib.
+  if builder_dict['role'] == 'Housekeeper':
+    gyp_defs['skia_shared_lib'] = '1'
+
+  # skia_gpu.
+  if builder_dict.get('cpu_or_gpu') == 'CPU':
+    gyp_defs['skia_gpu'] = '0'
+
+  # skia_warnings_as_errors.
+  werr = False
+  if builder_dict['role'] == 'Build':
+    if 'Win' in builder_dict.get('os', ''):
+      if not ('GDI' in builder_dict.get('extra_config', '') or
+              'Exceptions' in builder_dict.get('extra_config', '')):
+        werr = True
+    elif ('Mac' in builder_dict.get('os', '') and
+          'Android' in builder_dict.get('extra_config', '')):
+      werr = False
+    elif 'Fast' in builder_dict.get('extra_config', ''):  # pragma: no cover
+      # See https://bugs.chromium.org/p/skia/issues/detail?id=5257
+      werr = False
+    else:
+      werr = True
+  gyp_defs['skia_warnings_as_errors'] = str(int(werr))  # True/False -> '1'/'0'
+
+  # Win debugger.
+  if 'Win' in builder_dict.get('os', ''):
+    gyp_defs['skia_win_debuggers_path'] = 'c:/DbgHelp'
+
+  # Qt SDK (Win).
+  if 'Win' in builder_dict.get('os', ''):
+    if builder_dict.get('os') == 'Win8':
+      gyp_defs['qt_sdk'] = 'C:/Qt/Qt5.1.0/5.1.0/msvc2012_64/'
+    else:
+      gyp_defs['qt_sdk'] = 'C:/Qt/4.8.5/'
+
+  # ANGLE.
+  if builder_dict.get('extra_config') == 'ANGLE':  # pragma: no cover
+    gyp_defs['skia_angle'] = '1'
+    if builder_dict.get('os', '') in ('Ubuntu', 'Linux'):
+      gyp_defs['use_x11'] = '1'
+      gyp_defs['chromeos'] = '0'
+
+  # GDI.
+  if builder_dict.get('extra_config') == 'GDI':  # pragma: no cover
+    gyp_defs['skia_gdi'] = '1'
+
+  # Build with Exceptions on Windows.
+  if ('Win' in builder_dict.get('os', '') and
+      builder_dict.get('extra_config') == 'Exceptions'):  # pragma: no cover
+    gyp_defs['skia_win_exceptions'] = '1'
+
+  # iOS.
+  if (builder_dict.get('os') == 'iOS' or
+      builder_dict.get('extra_config') == 'iOS'):
+    gyp_defs['skia_os'] = 'ios'
+
+  # Shared library build.
+  if builder_dict.get('extra_config') == 'Shared':
+    gyp_defs['skia_shared_lib'] = '1'
+
+  # Build fastest Skia possible.
+  if builder_dict.get('extra_config') == 'Fast':  # pragma: no cover
+    gyp_defs['skia_fast'] = '1'
+
+  # PDF viewer in GM.
+  if (builder_dict.get('os') == 'Mac10.8' and
+      builder_dict.get('arch') == 'x86_64' and
+      builder_dict.get('configuration') == 'Release'):  # pragma: no cover
+    gyp_defs['skia_run_pdfviewer_in_gm'] = '1'
+
+  # Clang.
+  if builder_dict.get('compiler') == 'Clang':
+    gyp_defs['skia_clang_build'] = '1'
+
+  # Valgrind.
+  if 'Valgrind' in builder_dict.get('extra_config', ''):
+    gyp_defs['skia_release_optimization_level'] = '1'
+
+  # Link-time code generation just wastes time on compile-only bots.
+  if (builder_dict.get('role') == 'Build' and
+      builder_dict.get('compiler') == 'MSVC'):
+    gyp_defs['skia_win_ltcg'] = '0'
+
+  # Mesa.
+  if (builder_dict.get('extra_config') == 'Mesa' or
+      builder_dict.get('cpu_or_gpu_value') == 'Mesa'):  # pragma: no cover
+    gyp_defs['skia_mesa'] = '1'
+
+  # skia_use_android_framework_defines.
+  if builder_dict.get('extra_config') == 'Android_FrameworkDefs':
+    gyp_defs['skia_use_android_framework_defines'] = '1'  # pragma: no cover
+
+  # Skia dump stats for perf tests and gpu
+  if (builder_dict.get('cpu_or_gpu') == 'GPU' and
+      builder_dict.get('role') == 'Perf'):
+    gyp_defs['skia_dump_stats'] = '1'
+
+  # CommandBuffer.
+  if builder_dict.get('extra_config') == 'CommandBuffer':
+    gyp_defs['skia_command_buffer'] = '1'
+
+  # Vulkan.
+  if builder_dict.get('extra_config') == 'Vulkan':
+    gyp_defs['skia_vulkan'] = '1'
+    gyp_defs['skia_vulkan_debug_layers'] = '0'
+
+  return gyp_defs
+
+
+def get_extra_env_vars(builder_dict):
+  env = {}
+  if builder_dict.get('configuration') == 'Coverage':
+    # We have to use Clang 3.6 because earlier versions do not support the
+    # compile flags we use and 3.7 and 3.8 hit asserts during compilation.
+    env['CC'] = '/usr/bin/clang-3.6'
+    env['CXX'] = '/usr/bin/clang++-3.6'
+  elif builder_dict.get('compiler') == 'Clang':
+    env['CC'] = '/usr/bin/clang'
+    env['CXX'] = '/usr/bin/clang++'
+
+  # SKNX_NO_SIMD, SK_USE_DISCARDABLE_SCALEDIMAGECACHE, etc.
+  extra_config = builder_dict.get('extra_config', '')
+  if extra_config.startswith('SK') and extra_config.isupper():
+    env['CPPFLAGS'] = '-D' + extra_config  # pragma: no cover
+
+  return env
+
+
+def build_targets_from_builder_dict(builder_dict):
+  """Return a list of targets to build, depending on the builder type."""
+  if builder_dict.get('extra_config') == 'iOS':
+    return ['iOSShell']
+  if 'SAN' in builder_dict.get('extra_config', ''):
+    # 'most' does not compile under MSAN.
+    return ['dm', 'nanobench']
+  else:
+    return ['most']
+
+
+def device_cfg(builder_dict):
+  # Android.
+  if 'Android' in builder_dict.get('extra_config', ''):
+    if 'NoNeon' in builder_dict['extra_config']:  # pragma: no cover
+      return 'arm_v7'
+    return {
+      'Arm64': 'arm64',
+      'x86': 'x86',
+      'x86_64': 'x86_64',
+      'Mips': 'mips',
+      'Mips64': 'mips64',
+      'MipsDSP2': 'mips_dsp2',
+    }.get(builder_dict['target_arch'], 'arm_v7_neon')
+  elif builder_dict.get('os') == 'Android':
+    return {
+      'AndroidOne':    'arm_v7_neon',
+      'GalaxyS3':      'arm_v7_neon',
+      'GalaxyS4':      'arm_v7_neon',
+      'NVIDIA_Shield': 'arm64',
+      'Nexus10':       'arm_v7_neon',
+      'Nexus5':        'arm_v7_neon',
+      'Nexus6':        'arm_v7_neon',
+      'Nexus7':        'arm_v7_neon',
+      'Nexus7v2':      'arm_v7_neon',
+      'Nexus9':        'arm64',
+      'NexusPlayer':   'x86',
+    }[builder_dict['model']]
+
+  # iOS.
+  if 'iOS' in builder_dict.get('os', ''):
+    return {
+      'iPad4': 'iPad4,1',
+    }[builder_dict['model']]
+
+  return None
+
+
+def product_board(builder_dict):
+  if 'Android' in builder_dict.get('os', ''):
+    return {
+      'AndroidOne':    'sprout',
+      'GalaxyS3':      'm0',  #'smdk4x12', Detected incorrectly by swarming?
+      'GalaxyS4':      None,  # TODO(borenet,kjlubick)
+      'NVIDIA_Shield': 'foster',
+      'Nexus10':       'manta',
+      'Nexus5':        'hammerhead',
+      'Nexus6':        'shamu',
+      'Nexus7':        'grouper',
+      'Nexus7v2':      'flo',
+      'Nexus9':        'flounder',
+      'NexusPlayer':   'fugu',
+    }[builder_dict['model']]
+  return None
+
+
+def dm_flags(bot):
+  args = []
+
+  # 32-bit desktop bots tend to run out of memory, because they have relatively
+  # far more cores than RAM (e.g. 32 cores, 3G RAM).  Hold them back a bit.
+  if '-x86-' in bot and not 'NexusPlayer' in bot:
+    args.extend('--threads 4'.split(' '))
+
+  # These are the canonical configs that we would ideally run on all bots. We
+  # may opt out or substitute some below for specific bots
+  configs = ['565', '8888', 'gpu', 'gpusrgb', 'pdf']
+  # Add in either msaa4 or msaa16 to the canonical set of configs to run
+  if 'Android' in bot or 'iOS' in bot:
+    configs.append('msaa4')
+  else:
+    configs.append('msaa16')
+
+  # With msaa, the S4 crashes and the NP produces a long error stream when we
+  # run with MSAA. The Tegra2 and Tegra3 just don't support it. No record of
+  # why we're not running msaa on iOS, probably started with gpu config and just
+  # haven't tried.
+  if ('GalaxyS4'    in bot or
+      'NexusPlayer' in bot or
+      'Tegra3'      in bot or
+      'iOS'         in bot):
+    configs = [x for x in configs if 'msaa' not in x]
+
+  # Runs out of memory on Android bots and Daisy.  Everyone else seems fine.
+  if 'Android' in bot or 'Daisy' in bot:
+    configs.remove('pdf')
+
+  if '-GCE-' in bot:
+    configs.extend(['f16', 'srgb'])              # Gamma-correct formats.
+    configs.extend(['sp-8888', '2ndpic-8888'])   # Test niche uses of SkPicture.
+
+  if '-TSAN' not in bot:
+    if ('TegraK1'  in bot or
+        'TegraX1'  in bot or
+        'GTX550Ti' in bot or
+        'GTX660'   in bot or
+        'GT610'    in bot):
+      if 'Android' in bot:
+        configs.append('nvprdit4')
+      else:
+        configs.append('nvprdit16')
+
+  # We want to test the OpenGL config not the GLES config on the X1
+  if 'TegraX1' in bot:
+    configs = [x.replace('gpu', 'gl') for x in configs]
+    configs = [x.replace('msaa', 'glmsaa') for x in configs]
+    configs = [x.replace('nvpr', 'glnvpr') for x in configs]
+
+  # NP is running out of RAM when we run all these modes.  skia:3255
+  if 'NexusPlayer' not in bot:
+    configs.extend(mode + '-8888' for mode in
+                   ['serialize', 'tiles_rt', 'pic'])
+
+  if 'ANGLE' in bot:  # pragma: no cover
+    configs.append('angle')
+
+  # We want to run gpudft on atleast the mali 400
+  if 'GalaxyS3' in bot:
+    configs.append('gpudft')
+
+  # Test instanced rendering on a limited number of platforms
+  if 'Nexus6' in bot:  # pragma: no cover
+    configs.append('esinst') # esinst4 isn't working yet on Adreno.
+  elif 'TegraX1' in bot:
+    # Multisampled instanced configs use nvpr.
+    configs = [x.replace('glnvpr', 'glinst') for x in configs]
+    configs.append('glinst')
+  elif 'MacMini6.2' in bot:
+    configs.extend(['glinst', 'glinst16'])
+
+  # CommandBuffer bot *only* runs the command_buffer config.
+  if 'CommandBuffer' in bot:
+    configs = ['commandbuffer']
+
+  # Vulkan bot *only* runs the vk config.
+  if 'Vulkan' in bot:
+    configs = ['vk']
+
+  args.append('--config')
+  args.extend(configs)
+
+  # Run tests, gms, and image decoding tests everywhere.
+  args.extend('--src tests gm image'.split(' '))
+
+  if 'GalaxyS' in bot:
+    args.extend(('--threads', '0'))
+
+  blacklist = []
+
+  # TODO: ???
+  blacklist.extend('f16 _ _ dstreadshuffle'.split(' '))
+  blacklist.extend('f16 image _ _'.split(' '))
+  blacklist.extend('srgb image _ _'.split(' '))
+  blacklist.extend('gpusrgb image _ _'.split(' '))
+
+  if 'Valgrind' in bot:
+    # These take 18+ hours to run.
+    blacklist.extend('pdf gm _ fontmgr_iter'.split(' '))
+    blacklist.extend('pdf _ _ PANO_20121023_214540.jpg'.split(' '))
+    blacklist.extend('pdf skp _ worldjournal'.split(' '))
+    blacklist.extend('pdf skp _ desk_baidu.skp'.split(' '))
+    blacklist.extend('pdf skp _ desk_wikipedia.skp'.split(' '))
+
+  if 'iOS' in bot:
+    blacklist.extend('gpu skp _ _ msaa skp _ _'.split(' '))
+    blacklist.extend('msaa16 gm _ tilemodesProcess'.split(' '))
+
+  if 'Mac' in bot or 'iOS' in bot:
+    # CG fails on questionable bmps
+    blacklist.extend('_ image gen_platf rgba32abf.bmp'.split(' '))
+    blacklist.extend('_ image gen_platf rgb24prof.bmp'.split(' '))
+    blacklist.extend('_ image gen_platf rgb24lprof.bmp'.split(' '))
+    blacklist.extend('_ image gen_platf 8bpp-pixeldata-cropped.bmp'.split(' '))
+    blacklist.extend('_ image gen_platf 4bpp-pixeldata-cropped.bmp'.split(' '))
+    blacklist.extend('_ image gen_platf 32bpp-pixeldata-cropped.bmp'.split(' '))
+    blacklist.extend('_ image gen_platf 24bpp-pixeldata-cropped.bmp'.split(' '))
+
+    # CG has unpredictable behavior on this questionable gif
+    # It's probably using uninitialized memory
+    blacklist.extend('_ image gen_platf frame_larger_than_image.gif'.split(' '))
+
+  # WIC fails on questionable bmps
+  if 'Win' in bot:
+    blacklist.extend('_ image gen_platf rle8-height-negative.bmp'.split(' '))
+    blacklist.extend('_ image gen_platf rle4-height-negative.bmp'.split(' '))
+    blacklist.extend('_ image gen_platf pal8os2v2.bmp'.split(' '))
+    blacklist.extend('_ image gen_platf pal8os2v2-16.bmp'.split(' '))
+    blacklist.extend('_ image gen_platf rgba32abf.bmp'.split(' '))
+    blacklist.extend('_ image gen_platf rgb24prof.bmp'.split(' '))
+    blacklist.extend('_ image gen_platf rgb24lprof.bmp'.split(' '))
+    blacklist.extend('_ image gen_platf 8bpp-pixeldata-cropped.bmp'.split(' '))
+    blacklist.extend('_ image gen_platf 4bpp-pixeldata-cropped.bmp'.split(' '))
+    blacklist.extend('_ image gen_platf 32bpp-pixeldata-cropped.bmp'.split(' '))
+    blacklist.extend('_ image gen_platf 24bpp-pixeldata-cropped.bmp'.split(' '))
+    if 'x86_64' in bot and 'CPU' in bot:
+      # This GM triggers a SkSmallAllocator assert.
+      blacklist.extend('_ gm _ composeshader_bitmap'.split(' '))
+
+  if 'Android' in bot or 'iOS' in bot:
+    # This test crashes the N9 (perhaps because of large malloc/frees). It also
+    # is fairly slow and not platform-specific. So we just disable it on all of
+    # Android and iOS. skia:5438
+    blacklist.extend('_ test _ GrShape'.split(' '))
+
+  if 'Win8' in bot:
+    # bungeman: "Doesn't work on Windows anyway, produces unstable GMs with
+    # 'Unexpected error' from DirectWrite"
+    blacklist.extend('_ gm _ fontscalerdistortable'.split(' '))
+
+  # skia:4095
+  bad_serialize_gms = ['bleed_image',
+                       'c_gms',
+                       'colortype',
+                       'colortype_xfermodes',
+                       'drawfilter',
+                       'fontmgr_bounds_0.75_0',
+                       'fontmgr_bounds_1_-0.25',
+                       'fontmgr_bounds',
+                       'fontmgr_match',
+                       'fontmgr_iter']
+
+  # skia:5589
+  bad_serialize_gms.extend(['bitmapfilters',
+                            'bitmapshaders',
+                            'bleed',
+                            'bleed_alpha_bmp',
+                            'bleed_alpha_bmp_shader',
+                            'convex_poly_clip',
+                            'extractalpha',
+                            'filterbitmap_checkerboard_32_32_g8',
+                            'filterbitmap_image_mandrill_64',
+                            'shadows',
+                            'simpleaaclip_aaclip'])
+  # skia:5595
+  bad_serialize_gms.extend(['composeshader_bitmap',
+                            'scaled_tilemodes_npot',
+                            'scaled_tilemodes'])
+  for test in bad_serialize_gms:
+    blacklist.extend(['serialize-8888', 'gm', '_', test])
+
+  if 'Mac' not in bot:
+    for test in ['bleed_alpha_image', 'bleed_alpha_image_shader']:
+      blacklist.extend(['serialize-8888', 'gm', '_', test])
+  # It looks like we skip these only for out-of-memory concerns.
+  if 'Win' in bot or 'Android' in bot:
+    for test in ['verylargebitmap', 'verylarge_picture_image']:
+      blacklist.extend(['serialize-8888', 'gm', '_', test])
+
+  # skia:4769
+  for test in ['drawfilter']:
+    blacklist.extend([    'sp-8888', 'gm', '_', test])
+    blacklist.extend([   'pic-8888', 'gm', '_', test])
+    blacklist.extend(['2ndpic-8888', 'gm', '_', test])
+  # skia:4703
+  for test in ['image-cacherator-from-picture',
+               'image-cacherator-from-raster',
+               'image-cacherator-from-ctable']:
+    blacklist.extend([       'sp-8888', 'gm', '_', test])
+    blacklist.extend([      'pic-8888', 'gm', '_', test])
+    blacklist.extend([   '2ndpic-8888', 'gm', '_', test])
+    blacklist.extend(['serialize-8888', 'gm', '_', test])
+
+  # Extensions for RAW images
+  r = ["arw", "cr2", "dng", "nef", "nrw", "orf", "raf", "rw2", "pef", "srw",
+       "ARW", "CR2", "DNG", "NEF", "NRW", "ORF", "RAF", "RW2", "PEF", "SRW"]
+
+  # skbug.com/4888
+  # Blacklist RAW images (and a few large PNGs) on GPU bots
+  # until we can resolve failures
+  if 'GPU' in bot:
+    blacklist.extend('_ image _ interlaced1.png'.split(' '))
+    blacklist.extend('_ image _ interlaced2.png'.split(' '))
+    blacklist.extend('_ image _ interlaced3.png'.split(' '))
+    for raw_ext in r:
+      blacklist.extend(('_ image _ .%s' % raw_ext).split(' '))
+
+  if 'Nexus9' in bot:  # pragma: no cover
+    for raw_ext in r:
+      blacklist.extend(('_ image _ .%s' % raw_ext).split(' '))
+
+  # Large image that overwhelms older Mac bots
+  if 'MacMini4.1-GPU' in bot:  # pragma: no cover
+    blacklist.extend('_ image _ abnormal.wbmp'.split(' '))
+    blacklist.extend(['msaa16', 'gm', '_', 'blurcircles'])
+
+  match = []
+  if 'Valgrind' in bot: # skia:3021
+    match.append('~Threaded')
+
+  if 'GalaxyS3' in bot:  # skia:1699
+    match.append('~WritePixels')
+
+  if 'AndroidOne' in bot:  # skia:4711
+    match.append('~WritePixels')  # pragma: no cover
+
+  if 'NexusPlayer' in bot:  # pragma: no cover
+    match.append('~ResourceCache')
+
+  if 'Nexus10' in bot: # skia:5509
+    match.append('~CopySurface')  # pragma: no cover
+
+  if 'ANGLE' in bot and 'Debug' in bot:  # pragma: no cover
+    match.append('~GLPrograms') # skia:4717
+
+  if 'MSAN' in bot:
+    match.extend(['~Once', '~Shared'])  # Not sure what's up with these tests.
+
+  if 'TSAN' in bot:  # pragma: no cover
+    match.extend(['~ReadWriteAlpha'])   # Flaky on TSAN-covered on nvidia bots.
+
+  if blacklist:
+    args.append('--blacklist')
+    args.extend(blacklist)
+
+  if match:
+    args.append('--match')
+    args.extend(match)
+
+  # These bots run out of memory running RAW codec tests. Do not run them in
+  # parallel
+  if ('NexusPlayer' in bot or 'Nexus5' in bot or 'Nexus9' in bot
+      or 'Win8-MSVC-ShuttleB' in bot):
+    args.append('--noRAW_threading')
+
+  return args
+
+
+def get_builder_spec(api, builder_name):
+  builder_dict = api.builder_name_schema.DictForBuilderName(builder_name)
+  env = get_extra_env_vars(builder_dict)
+  gyp_defs = get_gyp_defines(builder_dict)
+  gyp_defs_list = ['%s=%s' % (k, v) for k, v in gyp_defs.iteritems()]
+  gyp_defs_list.sort()
+  env['GYP_DEFINES'] = ' '.join(gyp_defs_list)
+
+  build_targets = build_targets_from_builder_dict(builder_dict)
+  rv = {
+    'build_targets': build_targets,
+    'builder_cfg': builder_dict,
+    'dm_flags': dm_flags(builder_name),
+    'env': env,
+    'nanobench_flags': nanobench_flags(builder_name),
+  }
+  device = device_cfg(builder_dict)
+  if device:
+    rv['device_cfg'] = device
+  board = product_board(builder_dict)
+  if board:
+    rv['product.board'] = board
+
+  role = builder_dict['role']
+  if role == api.builder_name_schema.BUILDER_ROLE_HOUSEKEEPER:
+    configuration = CONFIG_RELEASE
+  else:
+    configuration = builder_dict.get('configuration', CONFIG_DEBUG)
+  arch = (builder_dict.get('arch') or builder_dict.get('target_arch'))
+  if ('Win' in builder_dict.get('os', '') and arch == 'x86_64'):
+    configuration += '_x64'
+  rv['configuration'] = configuration
+  if configuration == 'Coverage':
+    rv['do_compile_steps'] = False
+  rv['do_test_steps'] = role == api.builder_name_schema.BUILDER_ROLE_TEST
+  rv['do_perf_steps'] = role == api.builder_name_schema.BUILDER_ROLE_PERF
+
+  # Do we upload perf results?
+  upload_perf_results = False
+  if (role == api.builder_name_schema.BUILDER_ROLE_PERF and
+      CONFIG_RELEASE in configuration):
+    upload_perf_results = True
+  rv['upload_perf_results'] = upload_perf_results
+
+  # Do we upload correctness results?
+  skip_upload_bots = [
+    'ASAN',
+    'Coverage',
+    'MSAN',
+    'TSAN',
+    'UBSAN',
+    'Valgrind',
+  ]
+  upload_dm_results = True
+  for s in skip_upload_bots:
+    if s in builder_name:
+      upload_dm_results = False
+      break
+  rv['upload_dm_results'] = upload_dm_results
+
+  return rv
+
+
+def nanobench_flags(bot):
+  args = ['--pre_log']
+
+  if 'GPU' in bot:
+    args.append('--images')
+    args.extend(['--gpuStatsDump', 'true'])
+
+  if 'Android' in bot and 'GPU' in bot:
+    args.extend(['--useThermalManager', '1,1,10,1000'])
+
+  args.extend(['--scales', '1.0', '1.1'])
+
+  if 'iOS' in bot:
+    args.extend(['--skps', 'ignore_skps'])
+
+  config = ['565', '8888', 'gpu', 'nonrendering', 'angle', 'hwui' ]
+  config += [ 'f16', 'srgb' ]
+  # The S4 crashes and the NP produces a long error stream when we run with
+  # MSAA.
+  if ('GalaxyS4'    not in bot and
+      'NexusPlayer' not in bot):
+    if 'Android' in bot:
+      # The TegraX1 has a regular OpenGL implementation. We bench that instead
+      # of ES.
+      if 'TegraX1' in bot:
+        config.remove('gpu')
+        config.extend(['gl', 'glmsaa4', 'glnvpr4', 'glnvprdit4'])
+      else:
+        config.extend(['msaa4', 'nvpr4', 'nvprdit4'])
+    else:
+      config.extend(['msaa16', 'nvpr16', 'nvprdit16'])
+
+  # Bench instanced rendering on a limited number of platforms
+  if 'Nexus6' in bot:  # pragma: no cover
+    config.append('esinst') # esinst4 isn't working yet on Adreno.
+  elif 'TegraX1' in bot:
+    config.extend(['glinst', 'glinst4'])
+  elif 'MacMini6.2' in bot:
+    config.extend(['glinst', 'glinst16'])
+
+  if 'Vulkan' in bot:
+    config = ['vk']
+
+  args.append('--config')
+  args.extend(config)
+
+  if 'Valgrind' in bot:
+    # Don't care about Valgrind performance.
+    args.extend(['--loops',   '1'])
+    args.extend(['--samples', '1'])
+    # Ensure that the bot framework does not think we have timed out.
+    args.extend(['--keepAlive', 'true'])
+
+  match = []
+  if 'Android' in bot:
+    # Segfaults when run as GPU bench. Very large texture?
+    match.append('~blurroundrect')
+    match.append('~patch_grid')  # skia:2847
+    match.append('~desk_carsvg')
+  if 'NexusPlayer' in bot:  # pragma: no cover
+    match.append('~desk_unicodetable')
+  if 'Nexus5' in bot:  # pragma: no cover
+    match.append('~keymobi_shop_mobileweb_ebay_com.skp')  # skia:5178
+  if 'iOS' in bot:
+    match.append('~blurroundrect')
+    match.append('~patch_grid')  # skia:2847
+    match.append('~desk_carsvg')
+    match.append('~keymobi')
+    match.append('~path_hairline')
+    match.append('~GLInstancedArraysBench') # skia:4714
+
+  # the 32-bit GCE bots run out of memory in DM when running these large images
+  # so defensively disable them in nanobench, too.
+  # FIXME (scroggo): This may have just been due to SkImageDecoder's
+  # buildTileIndex leaking memory (https://bug.skia.org/4360). That is
+  # disabled by default for nanobench, so we may not need this.
+  # FIXME (scroggo): Share image blacklists between dm and nanobench?
+  if 'x86' in bot and not 'x86-64' in bot:
+    match.append('~interlaced1.png')
+    match.append('~interlaced2.png')
+    match.append('~interlaced3.png')
+
+  # This low-end Android bot crashes about 25% of the time while running the
+  # (somewhat intense) shapes benchmarks.
+  if 'Perf-Android-GCC-GalaxyS3-GPU-Mali400-Arm7-Release' in bot:
+    match.append('~shapes_')  # pragma: no cover
+
+  # We do not need or want to benchmark the decodes of incomplete images.
+  # In fact, in nanobench we assert that the full image decode succeeds.
+  match.append('~inc0.gif')
+  match.append('~inc1.gif')
+  match.append('~incInterlaced.gif')
+  match.append('~inc0.jpg')
+  match.append('~incGray.jpg')
+  match.append('~inc0.wbmp')
+  match.append('~inc1.wbmp')
+  match.append('~inc0.webp')
+  match.append('~inc1.webp')
+  match.append('~inc0.ico')
+  match.append('~inc1.ico')
+  match.append('~inc0.png')
+  match.append('~inc1.png')
+  match.append('~inc2.png')
+  match.append('~inc12.png')
+  match.append('~inc13.png')
+  match.append('~inc14.png')
+  match.append('~inc0.webp')
+  match.append('~inc1.webp')
+
+  if match:
+    args.append('--match')
+    args.extend(match)
+
+  return args
+
 
 class SkiaVarsApi(recipe_api.RecipeApi):
 
@@ -37,6 +708,10 @@ class SkiaVarsApi(recipe_api.RecipeApi):
       home_dir = '[HOME]'
     return home_dir
 
+  def get_builder_spec(self, builder_name):
+    """Return the builder_spec for the given builder name."""
+    return get_builder_spec(self.m, builder_name)
+
   def setup(self):
     """Prepare the variables."""
     # Setup