Avoid unused Computations in SelectionController::selectClosestWordFromHitTestResult

third_party/WebKit/Source/core/editing/SelectionController.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights
  * reserved.
  * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2012 Digia Plc. and/or its subsidiary(-ies)
  * Copyright (C) 2015 Google 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:
@@ skipping 424 matching lines @@
   return true;
 }
 
 bool SelectionController::selectClosestWordFromHitTestResult(
     const HitTestResult& result,
     AppendTrailingWhitespace appendTrailingWhitespace,
     SelectInputEventType selectInputEventType) {
   Node* innerNode = result.innerNode();
   VisibleSelectionInFlatTree newSelection;
 
-  if (!innerNode || !innerNode->layoutObject())
+  if (!innerNode || !innerNode->layoutObject() ||
+      !innerNode->layoutObject()->isSelectable())
     return false;
 
   // Special-case image local offset to always be zero, to avoid triggering
   // LayoutReplaced::positionFromPoint's advancement of the position at the
   // mid-point of the the image (which was intended for mouse-drag selection
   // and isn't desirable for touch).
   HitTestResult adjustedHitTestResult = result;
   if (selectInputEventType == SelectInputEventType::Touch && result.image())
     adjustedHitTestResult.setNodeAndPosition(result.innerNode(),
                                              LayoutPoint(0, 0));
@@ skipping 635 matching lines @@
 
 bool isExtendingSelection(const MouseEventWithHitTestResults& event) {
   bool isMouseDownOnLinkOrImage =
       event.isOverLink() || event.hitTestResult().image();
   return (event.event().modifiers() & WebInputEvent::Modifiers::ShiftKey) !=
              0 &&
          !isMouseDownOnLinkOrImage;
 }
 
 }  // namespace blink