Upload symbols when uploading mojo binaries to the CDN.

mojo/public/mojo_application.gni

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/module_args/mojo.gni")
 import("mojo.gni")
 import("mojo_sdk.gni")
 
 # Generate a binary mojo application.The parameters of this template are those
 # of a shared library.
 template("mojo_native_application") {
   if (defined(invoker.output_name)) {
     base_target_name = invoker.output_name
   } else {
     base_target_name = target_name
   }
 
   final_target_name = target_name
 
   if (!is_nacl) {
     output = base_target_name + ".mojo"
     library_target_name = base_target_name + "_library"
+    copy_symbols_target = "__${final_target_name}_copy_symbols"
 
     if (is_linux || is_android) {
       library_name = "lib${library_target_name}.so"
     } else if (is_win) {
       library_name = "${library_target_name}.dll"
     } else if (is_mac || is_ios) {
       library_name = "lib${library_target_name}.dylib"
     } else {
       assert(false, "Platform not supported.")
     }
@@ skipping 90 matching lines @@
       if (defined(invoker.public)) {
         public = invoker.public
       }
       if (defined(invoker.sources)) {
         sources = invoker.sources
       }
       if (defined(invoker.testonly)) {
         testonly = invoker.testonly
       }
 
+      visibility = [
+        ":${final_target_name}",
+        ":${copy_symbols_target}",
+      ]
+    }
+
+    copy(copy_symbols_target) {
+      if (defined(invoker.testonly)) {
+        testonly = invoker.testonly
+      }
       visibility = [ ":${final_target_name}" ]
+      deps = [
+        ":${library_target_name}",
+      ]
+
+      sources = [
+        "${root_out_dir}/${library_name}",
+      ]
+      outputs = [
+        "${root_out_dir}/symbols/${library_name}",
+      ]
     }
 
     copy(final_target_name) {
       if (defined(invoker.testonly)) {
         testonly = invoker.testonly
       }
       if (defined(invoker.visibility)) {
         visibility = invoker.visibility
       }
       deps = [
         ":${library_target_name}",
+        ":${copy_symbols_target}",
       ]
 
       sources = [
         "${library_dir}/${library_name}",
       ]
       outputs = [
         "${root_out_dir}/${output}",
       ]
     }
   } else {
@@ skipping 209 matching lines @@
         "--output=$rebase_output",
         "--line=#!mojo mojo:android_handler",
       ]
 
       public_deps = [
         ":$zip_action_name",
       ]
     }
   }
 }