Reland: Update TextSelection for non-user initiated events

content/renderer/input/render_widget_input_handler.cc

 // Copyright 2015 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/renderer/input/render_widget_input_handler.h"
 
 #include <stddef.h>
 #include <stdint.h>
 #include <utility>
 
@@ skipping 180 matching lines @@
 }  // namespace
 
 RenderWidgetInputHandler::RenderWidgetInputHandler(
     RenderWidgetInputHandlerDelegate* delegate,
     RenderWidget* widget)
     : delegate_(delegate),
       widget_(widget),
       handling_input_event_(false),
       handling_event_overscroll_(nullptr),
       handling_event_type_(WebInputEvent::kUndefined),
-      suppress_next_char_events_(false) {
+      suppress_next_char_events_(false),
+      ime_composition_replacement_(false) {
   DCHECK(delegate);
   DCHECK(widget);
   delegate->SetInputHandler(this);
 }
 
 RenderWidgetInputHandler::~RenderWidgetInputHandler() {}
 
 void RenderWidgetInputHandler::HandleInputEvent(
     const blink::WebCoalescedInputEvent& coalesced_event,
     const ui::LatencyInfo& latency_info,
@@ skipping 228 matching lines @@
   // it can be bundled in the event ack.
   if (handling_event_overscroll_) {
     *handling_event_overscroll_ = std::move(params);
     return;
   }
 
   delegate_->OnDidOverscroll(*params);
 }
 
 }  // namespace content