Support generic synchronization against an IPC::Channel

ipc/BUILD.gn

 # Copyright (c) 2012 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/config/nacl/config.gni")
 import("//mojo/public/tools/bindings/mojom.gni")
 import("//testing/test.gni")
 import("//tools/ipc_fuzzer/ipc_fuzzer.gni")
 
 component("ipc") {
@@ skipping 120 matching lines @@
   }
 
   if (is_win || is_nacl_nonsfi) {
     sources -= [ "unix_domain_socket_util.cc" ]
   }
 
   defines = [ "IPC_IMPLEMENTATION" ]
 
   public_deps = [
     ":param_traits",
+    "//mojo/common:event",
     "//mojo/public/cpp/bindings",
     "//mojo/public/cpp/system",
   ]
   deps = [
     ":mojom",
     "//base",
   ]
 
   if (is_win || is_mac) {
     # On Windows HandleAttachmentWin needs to generate random IDs.
     # On Mac MachPortAttachmentMac needs to generate random IDs.
     deps += [ "//crypto" ]
   }
 
   if (enable_ipc_fuzzer) {
     public_configs = [ "//tools/ipc_fuzzer:ipc_fuzzer_config" ]
   }
 }
 
 mojom("mojom") {
   sources = [
     "ipc.mojom",
   ]
+
+  public_deps = [
+    "//mojo/common:event",
+  ]
 }
 
 mojom("test_interfaces") {
   testonly = true
   sources = [
     "ipc_test.mojom",
   ]
+
+  public_deps = [
+    "//mojo/common:event",
+  ]
 }
 
 # This is provided as a separate target so other targets can provide param
 # traits implementations without necessarily linking to all of IPC.
 source_set("param_traits") {
   public = [
     "ipc_param_traits.h",
   ]
 }
 
@@ skipping 109 matching lines @@
       ":ipc",
     ]
     deps = [
       "//base",
       "//base/test:test_support",
       "//mojo/edk/test:test_support",
       "//testing/gtest",
     ]
   }
 }