Fix public dependencies on //ipc

ppapi/proxy/BUILD.gn

 # Copyright 2015 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")
 
 config("proxy_implementation") {
   defines = [ "PPAPI_PROXY_IMPLEMENTATION" ]
 }
 
@@ skipping 256 matching lines @@
       "video_capture_resource.h",
     ]
   }
 
   configs += [
     ":proxy_implementation",
     "//build/config:precompiled_headers",
   ]
 
   public_deps = [
+    "//ipc",
     "//ppapi/proxy:ipc_sources",
   ]
 
   deps = [
     ":common",
     "//base",
     "//gpu/command_buffer/client:gles2_implementation",
     "//gpu/ipc/common:command_buffer_traits",
-    "//ipc",
     "//media:shared_memory_support",
     "//mojo/edk/system",
     "//ppapi/c",
     "//ppapi/shared_impl",
     "//ui/gfx/geometry",
     "//ui/gfx/ipc/geometry",
   ]
 
   if (!is_nacl) {
     deps += [
@@ skipping 54 matching lines @@
   ]
   if (is_nacl) {
     sources -= [ "serialized_flash_menu.cc" ]
   }
 
   configs += [ ":proxy_implementation" ]
 
   deps = [
     "//base",
     "//gpu/ipc/common:command_buffer_traits",
-    "//ipc",
     "//ppapi/c",
     "//ppapi/shared_impl",
   ]
+
+  public_deps = [
+    "//ipc",
+  ]
+
   if (!is_nacl) {
     deps += [ "//skia" ]
   }
 }
 
 static_library("test_support") {
   testonly = true
 
   sources = [
     "ppapi_proxy_test.cc",
     "ppapi_proxy_test.h",
     "resource_message_test_sink.cc",
     "resource_message_test_sink.h",
   ]
 
   public_deps = [
     ":proxy",
   ]
   deps = [
     "//base/test:test_support",
     "//ipc",
     "//ipc:test_support",
     "//ppapi/proxy",
     "//ppapi/shared_impl",
     "//testing/gmock",
     "//testing/gtest",
   ]
 }