[iOS][Password-Breach] Add illustration

Add the illustration to be used in the password breach screen.

Bug: 1008862
Change-Id: Iae1f4fe0a8bf342d1e9feecc4abd26752d9c5b30
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1833476Reviewed-by: Mark Cogan <marq@chromium.org>
Commit-Queue: Javier Ernesto Flores Robles <javierrobles@chromium.org>
Cr-Commit-Position: refs/heads/master@{#701941}

ios/chrome/browser/ui/passwords/resources/BUILD.gn

+# Copyright 2019 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/ios/asset_catalog.gni")
+import("//build/config/ios/rules.gni")
+
+group("resources") {
+  deps = [
+    ":password_breach_illustration",
+  ]
+}
+
+imageset("password_breach_illustration") {
+  sources = [
+    "password_breach_illustration.imageset/Contents.json",
+    "password_breach_illustration.imageset/illustration_dark.png",
+    "password_breach_illustration.imageset/illustration_light.png",
+  ]
+}

ios/chrome/browser/ui/passwords/resources/password_breach_illustration.imageset/Contents.json

+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "illustration_light.png"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "illustration_dark.png",
+      "appearances" : [
+        {
+          "appearance" : "luminosity",
+          "value" : "dark"
+        }
+      ]
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}
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