Reland: Update TextSelection for non-user initiated events

content/renderer/input/render_widget_input_handler.h

 // 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.
 
 #ifndef CONTENT_RENDERER_INPUT_RENDER_WIDGET_INPUT_HANDLER_H_
 #define CONTENT_RENDERER_INPUT_RENDER_WIDGET_INPUT_HANDLER_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 42 matching lines @@
 
   bool handling_input_event() const { return handling_input_event_; }
   void set_handling_input_event(bool handling_input_event) {
     handling_input_event_ = handling_input_event;
   }
 
   blink::WebInputEvent::Type handling_event_type() const {
     return handling_event_type_;
   }
 
+  bool ime_composition_replacement() const {
+    return ime_composition_replacement_;
+  }
+  void set_ime_composition_replacement(bool ime_composition_replacement) {
+    ime_composition_replacement_ = ime_composition_replacement;
+  }
+
  private:
   RenderWidgetInputHandlerDelegate* const delegate_;
 
   RenderWidget* const widget_;
 
   // Are we currently handling an input event?
   bool handling_input_event_;
 
   // Used to intercept overscroll notifications while an event is being
   // handled. If the event causes overscroll, the overscroll metadata can be
   // bundled in the event ack, saving an IPC.  Note that we must continue
   // supporting overscroll IPC notifications due to fling animation updates.
   std::unique_ptr<ui::DidOverscrollParams>* handling_event_overscroll_;
 
   // Type of the input event we are currently handling.
   blink::WebInputEvent::Type handling_event_type_;
 
   // Indicates if the next sequence of Char events should be suppressed or not.
   bool suppress_next_char_events_;
 
+  // Used to suppress notification about text selection changes triggered by
+  // IME composition when it replaces text.
+  bool ime_composition_replacement_;
+
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetInputHandler);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_INPUT_RENDER_WIDGET_INPUT_HANDLER_H_