Add support for Android spellcheck menu in Chrome/WebViews

content/browser/android/text_suggestion_host_android.h

Index: content/browser/android/text_suggestion_host_android.h
diff --git a/content/browser/android/text_suggestion_host_android.h b/content/browser/android/text_suggestion_host_android.h
new file mode 100644
index 0000000000000000000000000000000000000000..c5bf1c7a325e4c90321a0aaf1d660fc70ca75dd1
--- /dev/null
+++ b/content/browser/android/text_suggestion_host_android.h
@@ -0,0 +1,70 @@
+// 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.
+
+#ifndef CONTENT_BROWSER_ANDROID_TEXT_SUGGESTION_HOST_ANDROID_H_
+#define CONTENT_BROWSER_ANDROID_TEXT_SUGGESTION_HOST_ANDROID_H_
+
+#include "content/browser/android/render_widget_host_connector.h"
+#include "content/browser/renderer_host/input/timeout_monitor.h"
+#include "third_party/WebKit/public/platform/input_host.mojom.h"
+#include "third_party/WebKit/public/platform/input_messages.mojom.h"
+
+namespace content {
+
+class TextSuggestionHostAndroid : public RenderWidgetHostConnector {
+ public:
+  TextSuggestionHostAndroid(JNIEnv* env,
+                            const base::android::JavaParamRef<jobject>& obj,
+                            WebContents* web_contents);
+  ~TextSuggestionHostAndroid() override;
+
+  // RenderWidgetHostConnector implementation.
+  void UpdateRenderProcessConnection(
+      RenderWidgetHostViewAndroid* old_rwhva,
+      RenderWidgetHostViewAndroid* new_rhwva) override;
+
+  // Called from Java -> native
+  void ApplySpellCheckSuggestion(
+      JNIEnv*,
+      const base::android::JavaParamRef<jobject>&,
+      const base::android::JavaParamRef<jstring>& replacement);
+  void DeleteActiveSuggestionRange(JNIEnv*,
+                                   const base::android::JavaParamRef<jobject>&);
+  void NewWordAddedToDictionary(
+      JNIEnv*,
+      const base::android::JavaParamRef<jobject>&,
+      const base::android::JavaParamRef<jstring>& word);
+  void SuggestionMenuClosed(JNIEnv*,
+                            const base::android::JavaParamRef<jobject>&);
+
+  // Called from native -> Java
+  void ShowSpellCheckSuggestionMenu(
+      double caret_x,
+      double caret_y,
+      const std::string& marked_text,
+      const std::vector<blink::mojom::SpellCheckSuggestionPtr>& suggestions);
+
+  // Other methods
+  void FocusedNodeChanged();
+
+  void StartSpellCheckMenuTimer();
+  void StopSpellCheckMenuTimer();
+
+ private:
+  RenderFrameHost* GetFocusedFrame();
+  const blink::mojom::TextSuggestionBackendPtr& GetTextSuggestionBackend();
+  void OnSpellCheckMenuTimeout();
+
+  // Current RenderWidgetHostView connected to this instance. Can be null.
+  RenderWidgetHostViewAndroid* rwhva_;
+  JavaObjectWeakGlobalRef java_text_suggestion_host_;
+  blink::mojom::TextSuggestionBackendPtr text_suggestion_backend_;
+  TimeoutMonitor spellcheck_menu_timeout_;
+};
+
+bool RegisterTextSuggestionHost(JNIEnv* env);
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_ANDROID_TEXT_SUGGESTION_HOST_ANDROID_H_