Don't build seed corpora in most configs and delete duplicated config

Only build seed corpora where it is necessary, in order to reduce
build sizes.

Bug: 952412
Change-Id: I6e529226d4ba51fd547c1869525a9f094fdcd998
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1566454Reviewed-by: Max Moroz <mmoroz@chromium.org>
Reviewed-by: Ben Pastene <bpastene@chromium.org>
Commit-Queue: Jonathan Metzman <metzman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#650506}

tools/mb/mb_config.pyl

@@ -885,7 +885,7 @@
   # bots all using the 'release_bot' config).
   'configs': {
     'afl_asan_release_bot': [
-      'afl', 'asan', 'release_bot', 'chromeos_codecs', 'pdf_xfa', 'disable_nacl', 'optimize_for_fuzzing',
+      'afl', 'asan', 'release_bot', 'chromeos_codecs', 'pdf_xfa', 'disable_nacl', 'optimize_for_fuzzing', 'disable_seed_corpus',
     ],
 
     'android_binary_size': [
@@ -1425,20 +1425,16 @@
       'debug_bot', 'x86', 'minimal_symbols', 'no_com_init_hooks', 'chrome_with_codecs'
     ],
 
-    'libfuzzer_asan_debug_bot': [
-      'libfuzzer', 'asan', 'debug_bot', 'shared', 'chromeos_codecs', 'pdf_xfa', 'disable_nacl', 'optimize_for_fuzzing',
-    ],
-
     'libfuzzer_asan_debug_bot_v8_arm64': [
-      'libfuzzer', 'asan', 'debug_bot', 'shared', 'chromeos_codecs', 'pdf_xfa', 'disable_nacl', 'optimize_for_fuzzing', 'v8_simulate_arm64',
+      'libfuzzer', 'asan', 'debug_bot', 'shared', 'chromeos_codecs', 'pdf_xfa', 'disable_nacl', 'optimize_for_fuzzing', 'v8_simulate_arm64', 'disable_seed_corpus',
     ],
 
     'libfuzzer_asan_debug_bot_x86': [
-      'libfuzzer', 'asan', 'debug_bot', 'shared', 'chromeos_codecs', 'pdf_xfa', 'disable_nacl', 'optimize_for_fuzzing', 'x86', 'x86_host',
+      'libfuzzer', 'asan', 'debug_bot', 'shared', 'chromeos_codecs', 'pdf_xfa', 'disable_nacl', 'optimize_for_fuzzing', 'x86', 'x86_host',  'disable_seed_corpus',
     ],
 
     'libfuzzer_asan_debug_bot_x86_v8_arm': [
-      'libfuzzer', 'asan', 'debug_bot', 'shared', 'chromeos_codecs', 'pdf_xfa', 'disable_nacl', 'optimize_for_fuzzing', 'x86_host', 'v8_simulate_arm',
+      'libfuzzer', 'asan', 'debug_bot', 'shared', 'chromeos_codecs', 'pdf_xfa', 'disable_nacl', 'optimize_for_fuzzing', 'x86_host', 'v8_simulate_arm',  'disable_seed_corpus',
     ],
 
     'debug_trybot': [
@@ -1624,11 +1620,11 @@
     ],
 
     'libfuzzer_asan_debug_bot': [
-      'libfuzzer', 'asan', 'debug_bot', 'shared', 'chromeos_codecs', 'pdf_xfa', 'disable_nacl', 'optimize_for_fuzzing',
+      'libfuzzer', 'asan', 'debug_bot', 'shared', 'chromeos_codecs', 'pdf_xfa', 'disable_nacl', 'optimize_for_fuzzing', 'disable_seed_corpus',
     ],
 
     'libfuzzer_chromeos_asan_release_bot': [
-      'libfuzzer', 'asan', 'shared_release_bot', 'chromeos_with_codecs', 'pdf_xfa', 'disable_nacl', 'optimize_for_fuzzing',
+      'libfuzzer', 'asan', 'shared_release_bot', 'chromeos_with_codecs', 'pdf_xfa', 'disable_nacl', 'optimize_for_fuzzing', 'disable_seed_corpus',
     ],
 
     'libfuzzer_asan_release_bot': [
@@ -1636,15 +1632,15 @@
     ],
 
     'libfuzzer_asan_release_bot_v8_arm64': [
-      'libfuzzer', 'asan', 'shared_release_bot', 'chromeos_codecs', 'pdf_xfa', 'disable_nacl', 'optimize_for_fuzzing', 'v8_simulate_arm64',
+      'libfuzzer', 'asan', 'shared_release_bot', 'chromeos_codecs', 'pdf_xfa', 'disable_nacl', 'optimize_for_fuzzing', 'v8_simulate_arm64', 'disable_seed_corpus',
     ],
 
     'libfuzzer_asan_release_bot_x86': [
-      'libfuzzer', 'asan', 'shared_release_bot', 'chromeos_codecs', 'pdf_xfa', 'disable_nacl', 'optimize_for_fuzzing', 'x86', 'x86_host',
+      'libfuzzer', 'asan', 'shared_release_bot', 'chromeos_codecs', 'pdf_xfa', 'disable_nacl', 'optimize_for_fuzzing', 'x86', 'x86_host', 'disable_seed_corpus',
     ],
 
     'libfuzzer_asan_release_bot_x86_v8_arm': [
-      'libfuzzer', 'asan', 'shared_release_bot', 'chromeos_codecs', 'pdf_xfa', 'disable_nacl', 'optimize_for_fuzzing', 'x86_host', 'v8_simulate_arm',
+      'libfuzzer', 'asan', 'shared_release_bot', 'chromeos_codecs', 'pdf_xfa', 'disable_nacl', 'optimize_for_fuzzing', 'x86_host', 'v8_simulate_arm', 'disable_seed_corpus',
     ],
 
     'libfuzzer_asan_release_trybot': [
@@ -1656,11 +1652,11 @@
     ],
 
     'libfuzzer_msan_release_bot': [
-      'libfuzzer', 'msan', 'shared_release_bot', 'chromeos_codecs', 'pdf_xfa', 'disable_nacl', 'optimize_for_fuzzing',
+      'libfuzzer', 'msan', 'shared_release_bot', 'chromeos_codecs', 'pdf_xfa', 'disable_nacl', 'optimize_for_fuzzing', 'disable_seed_corpus',
     ],
 
     'libfuzzer_ubsan_release_bot': [
-      'libfuzzer', 'ubsan_security', 'release_bot', 'chromeos_codecs', 'pdf_xfa', 'disable_nacl', 'optimize_for_fuzzing',
+      'libfuzzer', 'ubsan_security', 'release_bot', 'chromeos_codecs', 'pdf_xfa', 'disable_nacl', 'optimize_for_fuzzing', 'disable_seed_corpus',
     ],
 
     'libfuzzer_mac_asan_release_bot': [
@@ -2105,6 +2101,10 @@
       'gn_args': 'enable_nacl=false',
     },
 
+    'disable_seed_corpus': {
+      'gn_args': 'archive_seed_corpus=false',
+    },
+
     'enable_blink_animation_use_time_delta': {
       'gn_args': 'blink_animation_use_time_delta=true',
     },