Add internals.textAffinity

third_party/WebKit/Source/core/testing/Internals.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2013 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 895 matching lines @@
   if (!frame()) {
     exceptionState.throwDOMException(
         InvalidAccessError, "The document's frame cannot be retrieved.");
     return ClientRect::create();
   }
 
   m_document->updateStyleAndLayoutIgnorePendingStylesheets();
   return ClientRect::create(frame()->selection().absoluteCaretBounds());
 }
 
+String Internals::textAffinity() {
+  if (frame()
+          ->page()
+          ->focusController()
+          .focusedFrame()
+          ->selection()
+          .affinity() == TextAffinity::Upstream) {

[yosin_UTC9, 2017/02/21 02:21:13]

Could you write as:
->selection().selectionInDOMTree().affinity()?

We're going to get rid of FrameSelection::affinity() for simplify
FrameSelection.
Since there are only two call sites (+1 for this patch), we don't need to have
this exposed by FrameSelection.

[yoichio, 2017/02/21 04:38:22]

Done.

+    return "Upstream";
+  }
+  return "Downstream";
+}
+
 ClientRect* Internals::boundingBox(Element* element) {
   DCHECK(element);
 
   element->document().updateStyleAndLayoutIgnorePendingStylesheets();
   LayoutObject* layoutObject = element->layoutObject();
   if (!layoutObject)
     return ClientRect::create();
   return ClientRect::create(
       layoutObject->absoluteBoundingBoxRectIgnoringTransforms());
 }
@@ skipping 2221 matching lines @@
 
 void Internals::crash() {
   CHECK(false) << "Intentional crash";
 }
 
 void Internals::setIsLowEndDevice(bool isLowEndDevice) {
   MemoryCoordinator::setIsLowEndDeviceForTesting(isLowEndDevice);
 }
 
 }  // namespace blink