[Fuchsia] Sharding test suites in fuchsia-code-coverage

The builder is red due to OOM since fuchsia can only log the coverage
data in ram-fs. So this change increases the shard counts of several
heavy test suites.

Change-Id: Ie4f3f84f29136e62e43d4ed09815bb5915ba3d2c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4750285
Auto-Submit: Zijie He <[email protected]>
Reviewed-by: Haiyang Pan <[email protected]>
Commit-Queue: Haiyang Pan <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1179714}
diff --git a/testing/buildbot/test_suite_exceptions.pyl b/testing/buildbot/test_suite_exceptions.pyl
index a63dd4f9..04425b1 100644
--- a/testing/buildbot/test_suite_exceptions.pyl
+++ b/testing/buildbot/test_suite_exceptions.pyl
@@ -1782,6 +1782,11 @@
           'shards': 4,
         },
       },
+      'fuchsia-code-coverage': {
+        'swarming': {
+          'shards': 4,
+        },
+      },
       'linux-exp-tsan-fyi-rel': {
         'swarming': {
           'shards': 2,
@@ -2115,6 +2120,11 @@
         # lower.
         'ci_only': True,
       },
+      'fuchsia-code-coverage': {
+        'swarming': {
+          'shards': 41,
+        },
+      },
       'fuchsia-x64-cast-receiver-rel': {
         # Temporarily only run this on CI due to resource requirements.
         # TODO(crbug.com/1374125): Remove this once resources are available.
@@ -2702,6 +2712,11 @@
   },
   'extensions_unittests': {
     'modifications': {
+      'fuchsia-code-coverage': {
+        'swarming': {
+          'shards': 2,
+        },
+      },
       'fuchsia-fyi-x64-asan': {
         'args': [
           '--test-launcher-filter-file=../../testing/buildbot/filters/fuchsia.lsan.extensions_unittests.filter',