Add support for Android spellcheck menu in Chrome/WebViews

content/browser/renderer_host/render_widget_host_view_android.cc

 // Copyright (c) 2012 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.
 
 #include "content/browser/renderer_host/render_widget_host_view_android.h"
 
 #include <android/bitmap.h>
 
 #include <utility>
 
@@ skipping 920 matching lines @@
   return weak_ptr_factory_.GetWeakPtr();
 }
 
 bool RenderWidgetHostViewAndroid::OnTouchEvent(
     const ui::MotionEvent& event) {
   if (!host_ || !host_->delegate())
     return false;
 
   ComputeEventLatencyOSTouchHistograms(event);
 
+  // Receiving any other touch event before the double-tap timeout expires

[rlanday, 2017/06/07 04:03:54]

This matches the behavior of the native Android text box:
https://android.googlesource.com/platform/frameworks/base/+/master/core/java/...

However, the native Android text box exhibits seriously buggy behavior if you
tap on a misspelled word and then keep typing (in most cases the spellcheck
marker is cleared from the edit, and it tries to do the highlight + open the
menu at the last location the menu was opened at; sometimes a crash even
results). So it might be prudent to also clear the timer on a keyboard event.

(Note for Googlers: Filed the Android bug as b/62392030)

+  // cancels opening the spellcheck menu.
+  if (ime_adapter_android_)
+    ime_adapter_android_->StopSpellCheckMenuTimer();
+
   // If a browser-based widget consumes the touch event, it's critical that
   // touch event interception be disabled. This avoids issues with
   // double-handling for embedder-detected gestures like side swipe.
   if (touch_selection_controller_ &&
       touch_selection_controller_->WillHandleTouchEvent(event)) {
     RequestDisallowInterceptTouchEvent();
     return true;
   }
 
   if (stylus_text_selector_.OnTouchEvent(event)) {
@@ skipping 1299 matching lines @@
 
   ui::WindowAndroidCompositor* compositor = window_android->GetCompositor();
   if (!compositor)
     return;
 
   overscroll_controller_ = base::MakeUnique<OverscrollControllerAndroid>(
       overscroll_refresh_handler, compositor, view_.GetDipScale());
 }
 
 }  // namespace content