Add a 64-bit ARM builder to the CQ.

infra/branch-config/cq.cfg

 # Commit Queue configuration file. The documentation of the format can be found
 # at http://luci-config.appspot.com/schemas/projects/refs:cq.cfg.
 
 version: 1
 cq_name: "skia"
 cq_status_url: "https://chromium-cq-status.appspot.com"
 commit_burst_delay: 300
 max_commit_burst: 2
 
 rietveld {
@@ skipping 16 matching lines @@
   try_job {
     buckets {
       name: "client.skia"
       builders { name: "Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-Trybot" }
       builders { name: "Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-Shared-Trybot" }
     }
     buckets {
       name: "client.skia.compile"
       builders { name: "Build-Mac10.8-Clang-x86_64-Release-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-Trybot" }
       builders { name: "Build-Win-MSVC-x86-Debug-Trybot" }
       builders { name: "Build-Win-MSVC-x86_64-Debug-Trybot" }
     }
     buckets {
       name: "client.skia.fyi"
       builders { name: "skia_presubmit-Trybot" }
     }
   }
 
   sign_cla {}
 }