Added CQ config to skia repo

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 {
+  url: "https://codereview.chromium.org"
+}
+
+verifiers {
+  reviewer_lgtm {
+    committer_list: "skia"
+    max_wait_secs: 21600  # 6 hours
+    no_lgtm_msg: "No LGTM from a valid reviewer yet. Please ask for an LGTM "
+                 "from a\nfull Skia committer from\n"
+                 "https://skia.googlesource.com/skia/+/master/CQ_COMMITTERS"
+  }
+
+  tree_status {
+    tree_status_url: "https://skia-tree-status.appspot.com"
+  }
+
+  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-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" }
+    }
+  }
+}