[milo] initial call to get git history

milo/api/proto/console_git_info.proto

Index: milo/api/proto/console_git_info.proto
diff --git a/milo/api/proto/console_git_info.proto b/milo/api/proto/console_git_info.proto
new file mode 100644
index 0000000000000000000000000000000000000000..dcca55957c8ff5e789afaff88c89da354f31950e
--- /dev/null
+++ b/milo/api/proto/console_git_info.proto
@@ -0,0 +1,33 @@
+// Copyright 2017 The LUCI Authors. All rights reserved.
+// Use of this source code is governed under the Apache License, Version 2.0
+// that can be found in the LICENSE file.
+
+syntax = "proto3";
+
+package milo;
+
+import "google/protobuf/timestamp.proto";
+
+// ConsoleGitInfo stores memcache-able data that the console view will use when
+// displaying git commits. A compressed ConsoleGitInfo should always be < 1MB,
+// so don't put anything too big in here.
+message ConsoleGitInfo {
+  message Commit {
+    // The raw commit hash.
+    bytes hash = 1;
+
+    // The author name (e.g. "Rey Cool")
+    string author_name = 2;
+
+    // The author email (e.g. "rey_cool@example.com")
+    string author_email = 3;
+
+    // The commit timestamp (~= when the commit landed... not always true!).
+    google.protobuf.Timestamp commit_time = 4;
+
+    // The raw commit message as text.
+    string msg = 5;
+  }
+
+  repeated Commit commits = 1;
+}