Rename linux_arm_compile trybot to linux_arm

tools/mb/mb_config.pyl

 # Copyright 2015 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   # This is the list of configs that you can pass to mb; each config
   # represents a particular combination of GYP_DEFINES/gn args that
   # we must support. A given config *may* be platform-specific but
   # is not necessarily so (i.e., we might have mac, win, and linux
   # bots all using the 'gn_release_bot' config).
@@ skipping 585 matching lines @@
       'linux_chromium_compile_dbg_ng': 'swarming_gn_debug_trybot',
       'linux_chromium_dbg_ng': 'swarming_gn_debug_trybot',
       'linux_chromium_trusty_dbg': 'gyp_debug_bot',
       'linux_chromium_trusty32_dbg': 'gyp_debug_bot_x86',
       'linux_chromium_gn_dbg': 'gn_debug_bot',
       'linux_chromium_gn_chromeos_dbg': 'chromeos_gn_debug_bot',
       'android_chromium_gn_compile_dbg': 'android_gn_debug_bot',
       'linux_chromium_msan_rel_ng': 'swarming_msan_gyp_release_trybot',
       'linux_chromium_tsan_rel_ng': 'swarming_tsan_gyp_release_trybot',
       'linux_chromium_practice_rel_ng': 'gyp_release_trybot',
-      'linux_arm_compile': 'swarming_gyp_release_trybot_arm',
+      'linux_arm': 'swarming_gyp_release_trybot_arm',
       'linux_chromium_compile_dbg_32_ng': 'swarming_gyp_debug_trybot_x86',
       'linux_chromium_dbg_32_ng': 'swarming_gyp_debug_trybot_x86',
       'linux_chromium_archive_rel_ng': 'noswarming_gn_release_bot',
       'linux_chromium_clobber_rel_ng': 'gyp_release_trybot',
       'linux_chromium_gn_upload': 'gn_linux_upload',
       'cast_shell_linux': 'cast_gyp_release_trybot',
       'linux_deterministic': 'swarming_deterministic_gyp_release_bot',
       'linux_ecs_ozone': 'embedded_gyp_debug_bot',
     },
     'tryserver.chromium.mac': {
@@ skipping 38 matching lines @@
       'win8_chromium_gn_rel': 'gn_release_trybot_x86',
       'win8_chromium_gn_upload': 'gn_release_bot_minimal_symbols_x86',
       'win_clang_x64_dbg': 'win_clang_debug_bot',
     },
     'tryserver.v8': {
       'v8_linux_chromium_gn_rel': 'gn_release_trybot',
       'v8_android_chromium_gn_dbg': 'android_gn_debug_bot',
     },
   },
 }