Allows client to access auth token from command line specified file.

blimp/common/BUILD.gn

Index: blimp/common/BUILD.gn
diff --git a/blimp/common/BUILD.gn b/blimp/common/BUILD.gn
index 8b5da1102129e7fd4319d87eb651a71866e4e0ab..337ec15eb5e4d3aba8bc213e0ae2231d5ba5be95 100644
--- a/blimp/common/BUILD.gn
+++ b/blimp/common/BUILD.gn
@@ -17,9 +17,13 @@ component("common") {
     "compositor/blimp_task_graph_runner.h",
     "create_blimp_message.cc",
     "create_blimp_message.h",
+    "get_client_token.cc",
+    "get_client_token.h",
     "logging.cc",
     "logging.h",
     "protocol_version.h",
+    "switches.cc",
+    "switches.h",
   ]
 
   defines = [ "BLIMP_COMMON_IMPLEMENTATION=1" ]