Implement ThreadedInputConnection.deleteSurroundingTextInCodePoints()

content/browser/frame_host/render_frame_host_impl.h

 // Copyright 2013 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_FRAME_HOST_RENDER_FRAME_HOST_IMPL_H_
 #define CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 418 matching lines @@
 
   // Set this frame as focused in the renderer process.  This supports
   // cross-process window.focus() calls.
   void SetFocusedFrame();
 
   // Deletes the current selection plus the specified number of characters
   // before and after the selection or caret.
   void ExtendSelectionAndDelete(size_t before, size_t after);
 
   // Deletes text before and after the current cursor position, excluding the
-  // selection.
+  // selection. The lengths are supplied in Java chars, not in code points or in
+  // glyphs.
   void DeleteSurroundingText(size_t before, size_t after);
 
+  // Deletes text before and after the current cursor position, excluding the
+  // selection. The lengths are supplied in code points, not in Java chars or in
+  // glyphs. Do nothing if there are one or more invalid surrogate pairs in the
+  // requested range

[Changwan Ryu, 2017/01/11 02:00:27]

Period at the end?

[yabinh, 2017/01/24 11:39:56]

Done.

+  void DeleteSurroundingTextInCodePoints(size_t before, size_t after);
+
   // Notifies the RenderFrame that the JavaScript message that was shown was
   // closed by the user.
   void JavaScriptDialogClosed(IPC::Message* reply_msg,
                               bool success,
                               const base::string16& user_input,
                               bool dialog_was_suppressed);
 
   // Get the accessibility mode from the delegate and Send a message to the
   // renderer process to change the accessibility mode.
   void UpdateAccessibilityMode();
@@ skipping 654 matching lines @@
 
   // NOTE: This must be the last member.
   base::WeakPtrFactory<RenderFrameHostImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_IMPL_H_