[Translate] Migrate IPCs to Mojo interfaces.

components/translate/content/common/BUILD.gn

Index: components/translate/content/common/BUILD.gn
diff --git a/components/translate/content/common/BUILD.gn b/components/translate/content/common/BUILD.gn
deleted file mode 100644
index 37e271535adef1e13d0eb63f886fc396e0425cac..0000000000000000000000000000000000000000
--- a/components/translate/content/common/BUILD.gn
+++ /dev/null
@@ -1,20 +0,0 @@
-# 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/config/features.gni")
-
-static_library("common") {
-  sources = [
-    "translate_messages.cc",
-    "translate_messages.h",
-  ]
-
-  deps = [
-    "//base",
-    "//components/translate/core/common",
-    "//components/translate/core/language_detection",
-    "//content/public/common",
-    "//ipc",
-  ]
-}