Add a GPU profile in trybot_analyze_config.json

This is for adding "analyze" to the GPU recipe

BUG=411991
TEST=
R=sky@chromium.org
NOTRY=True

Review URL: https://codereview.chromium.org/597763002

Cr-Commit-Position: refs/heads/master@{#296321}

testing/buildbot/trybot_analyze_config.json

@@ -22,6 +22,8 @@
     "exclusions": [
       "chrome/test/data/.*",
       "content/test/data/.*",
+      "content/test/gpu/.*",
+      "gpu/gles2_conform_support/gles2_conform_test_expectations.txt",
       "net/data/.*",
       "tools/clang/scripts/plugin_flags.sh",
       "tools/clang/scripts/update.py",