Add support for Android spellcheck menu in Chrome/WebViews

third_party/WebKit/public/platform/input_host.mojom

Index: third_party/WebKit/public/platform/input_host.mojom
diff --git a/third_party/WebKit/public/platform/input_host.mojom b/third_party/WebKit/public/platform/input_host.mojom
new file mode 100644
index 0000000000000000000000000000000000000000..7a4ae78e54e4cfb78f588cb0b77288f29b5c1af2
--- /dev/null
+++ b/third_party/WebKit/public/platform/input_host.mojom
@@ -0,0 +1,14 @@
+// Copyright 2017 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.
+
+module blink.mojom;
+
+struct SpellCheckSuggestion {
+  string suggestion;
+};
+
+interface TextSuggestionHost {
+  StartSpellCheckMenuTimer();
+  ShowSpellCheckSuggestionMenu(double caret_x, double caret_y, string marked_text, array<SpellCheckSuggestion> suggestions);
+};