Add some GN builders to the CQ.

infra/branch-config/cq.cfg

Index: infra/branch-config/cq.cfg
diff --git a/infra/branch-config/cq.cfg b/infra/branch-config/cq.cfg
index f3fe548eabab6273bbe426c6cd70cb1a5d7d5aee..df83a98533363dca714182d582e079fcf0db2b6a 100644
--- a/infra/branch-config/cq.cfg
+++ b/infra/branch-config/cq.cfg
@@ -33,12 +33,15 @@ verifiers {
     }
     buckets {
       name: "master.client.skia.compile"
+      builders { name: "Build-Mac-Clang-x86_64-Release-GN-Trybot" }
       builders { name: "Build-Mac-Clang-x86_64-Release-Trybot" }
+      builders { name: "Build-Ubuntu-Clang-x86_64-Debug-GN-Trybot" }
       builders { name: "Build-Ubuntu-Clang-x86_64-Debug-Trybot" }
       builders { name: "Build-Ubuntu-GCC-Arm64-Debug-Android-Trybot" }
       builders { name: "Build-Ubuntu-GCC-Arm7-Debug-Android-Trybot" }
       builders { name: "Build-Ubuntu-GCC-Mips-Debug-Android-Trybot" }
       builders { name: "Build-Ubuntu-GCC-x86_64-Release-CMake-Trybot" }
+      builders { name: "Build-Ubuntu-GCC-x86_64-Release-GN-Trybot" }
       builders { name: "Build-Ubuntu-GCC-x86_64-Release-Trybot" }
       builders { name: "Build-Win-MSVC-x86-Debug-Trybot" }
       builders { name: "Build-Win-MSVC-x86_64-Debug-Trybot" }