Update 'mb' setting for Linux ARM bots

- Add 'swarming' settings since these bots now use swarming.
- Remove 'arm_linux_tester' and corresponding 'none' settings.
- Remove now unused 'arm_float' settings.

CQ_EXTRA_TRYBOTS=tryserver.chromium.linux:linux_arm_compile
BUG=159519

Review URL: https://codereview.chromium.org/1470623002

Cr-Commit-Position: refs/heads/master@{#361028}

tools/mb/mb_config.pyl

@@ -52,7 +52,6 @@
     'gyp_official_goma_minimal_symbols_android_arm64': ['gyp', 'official', 'goma', 'minimal_symbols', 'android', 'arm64'],
     'gyp_official_goma_minimal_symbols_x64': ['gyp', 'official', 'goma', 'minimal_symbols', 'x64'],
     'gyp_official_goma_minimal_symbols_x86': ['gyp', 'official', 'goma', 'minimal_symbols', 'x86'],
-    'gyp_release_bot_arm': ['gyp', 'release_bot', 'arm', 'crosscompile'],
     'gyp_release_trybot': ['gyp', 'release_trybot'],
     'gyp_release_trybot_x64': ['gyp', 'release_trybot', 'x64'],
     'libfuzzer_upload_bot': ['gn', 'release', 'libfuzzer', 'asan', 'proprietary_codecs'],
@@ -78,8 +77,8 @@
     'swarming_gyp_debug_bot_no_symbols_x86': ['swarming', 'gyp', 'debug_bot', 'no_symbols', 'x86'],
     'swarming_gyp_debug_trybot_x86': ['swarming', 'gyp', 'debug_trybot', 'x86'],
     'swarming_gyp_release_bot': ['swarming', 'gyp', 'release_bot'],
+    'swarming_gyp_release_bot_arm': ['swarming', 'gyp', 'release_bot', 'arm', 'crosscompile'],
     'swarming_gyp_release_trybot_arm': ['swarming', 'gyp', 'release_trybot', 'arm', 'crosscompile'],
-    'swarming_gyp_release_trybot_arm_float': ['swarming', 'gyp', 'release_trybot', 'arm_float', 'crosscompile'],
     'swarming_tsan_gyp_release_trybot': ['swarming', 'disable_nacl', 'tsan', 'gyp', 'release_trybot'],
 
     # clang/win doesn't work with goma yet, so this can't use debug_bot:
@@ -127,11 +126,6 @@
       'gyp_defines': 'target_arch=arm64',
     },
 
-    'arm_float': {
-      'gn_args': 'error',
-      'gyp_defines': 'target_arch=arm arm_float_abi=hard',
-    },
-
     'arm64': {
       'gn_args': 'target_cpu="arm64"',
       'gyp_defines': 'target_arch=arm64',
@@ -387,11 +381,11 @@
     },
     'chromium.linux': {
       'Linux Builder': 'swarming_gn_release_bot',
-      'Linux Tests': 'swarming_gn_release_bot',
+      'Linux Tests': 'none',
       'Linux Builder (dbg)(32)': 'swarming_gyp_debug_bot_no_symbols_x86',
-      'Linux Tests (dbg)(1)(32)': 'swarming_gyp_debug_bot_no_symbols_x86',
+      'Linux Tests (dbg)(1)(32)': 'none',
       'Linux Builder (dbg)': 'swarming_gn_debug_bot',
-      'Linux Tests (dbg)(1)': 'swarming_gn_debug_bot',
+      'Linux Tests (dbg)(1)': 'none',
       'Linux GN': 'gn_release_bot',
       'Linux GN Clobber': 'gn_release_bot',
       'Linux GN (dbg)': 'gn_debug_bot',
@@ -445,7 +439,7 @@
       'Libfuzzer Upload Linux': 'libfuzzer_upload_bot',
       'Site Isolation Linux': 'gn_release_trybot',
       'Site Isolation Win': 'gyp_release_trybot_x64',
-      'Linux ARM': 'gyp_release_bot_arm',
+      'Linux ARM': 'swarming_gyp_release_bot_arm',
     },
     'chromium.webrtc.fyi': {
       'Android GN': 'android_gn_release_bot',
@@ -507,8 +501,6 @@
       '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_float',
-      'linux_arm_tester': 'none',
       '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_gyp_release_bot_linux_dump_symbols',