Update tests for PA-Everywhere FYI bots

On one hand, trim down the set of Android bots, because some of them
fail even without PA-Everywhere.

On the other hand, improve the coverage for the common case, by
switching to chromium_gtests, which looks like a very well rounded set
of unit tests.

Bug: 1121427
Change-Id: Ia816d857fe616cd0cf6bdf9ef4a7bc0df2e4256d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2596911
Commit-Queue: Bartek Nowierski <bartekn@chromium.org>
Commit-Queue: Ben Pastene <bpastene@chromium.org>
Reviewed-by: Ben Pastene <bpastene@chromium.org>
Auto-Submit: Bartek Nowierski <bartekn@chromium.org>
Cr-Commit-Position: refs/heads/master@{#840211}

testing/buildbot/test_suites.pyl

@@ -252,6 +252,18 @@
       },
     },
 
+    'android_specific_chromium_gtests_for_paeverywhere': {
+      'android_browsertests': {
+        'swarming': {
+          'shards': 1,
+        },
+      },
+      'android_webview_unittests': {},
+      'breakpad_unittests': {},
+      'gl_unittests': {},
+      'ui_android_unittests': {},
+    },
+
     'android_trichrome_smoke_tests': {
       'trichrome_chrome_bundle_fake_modules_smoke_test': {},
       'trichrome_chrome_bundle_smoke_test': {},
@@ -4192,13 +4204,6 @@
       },
     },
 
-    'paeverywhere_common_tests': {
-      'base_unittests': {},
-      'blink_platform_unittests': {},
-      'unit_tests': {},
-      'wtf_unittests': {},
-    },
-
     'perfetto_gtests': {
       'base_unittests': {},
       'content_browsertests': {
@@ -6142,27 +6147,27 @@
     ],
 
     'paeverywhere_android_gtests': [
-      'android_specific_chromium_gtests',
+      'android_specific_chromium_gtests_for_paeverywhere',
       'android_smoke_tests',
-      'paeverywhere_common_tests'
+      'chromium_gtests'
     ],
 
     'paeverywhere_linux_gtests': [
       'chromium_gtests_for_linux_and_mac_only',
       'chromium_gtests_for_linux_only',
       'chromium_gtests_for_win_and_linux_only',
-      'paeverywhere_common_tests',
+      'chromium_gtests',
     ],
 
     'paeverywhere_mac_gtests': [
       'chromium_gtests_for_linux_and_mac_only',
       'mac_specific_chromium_gtests',
-      'paeverywhere_common_tests',
+      'chromium_gtests',
     ],
 
     'paeverywhere_win_gtests': [
       'chromium_gtests_for_win_and_linux_only',
-      'paeverywhere_common_tests',
+      'chromium_gtests',
       'win_specific_chromium_gtests',
     ],