Reland: Switch components/password_manager code from IPC messages to Mojo.

components/password_manager/content/renderer/BUILD.gn

 # 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.
 
 static_library("renderer") {
   sources = [
     "credential_manager_client.cc",
     "credential_manager_client.h",
   ]
 
   deps = [
     "//base",
-    "//components/password_manager/content/common",
+    "//components/password_manager/content/public/cpp",
     "//components/password_manager/core/common",
     "//components/strings",
+    "//content/public/common",
     "//content/public/renderer",
-    "//ipc",
+    "//mojo/common:url_type_converters",
     "//third_party/WebKit/public:blink",
     "//url",
   ]
 }
 
 source_set("browser_tests") {
   testonly = true
   sources = [
     "credential_manager_client_browsertest.cc",
   ]
 
   deps = [
     ":renderer",
-    "//components/password_manager/content/common",
+    "//content/public/renderer",
     "//content/test:test_support",
-    "//ipc:test_support",
     "//testing/gmock",
     "//testing/gtest",
     "//third_party/WebKit/public:blink",
   ]
 }