Prune CreateVisiblePositionDeprecated from Editor::firstRectForRange

third_party/WebKit/Source/web/WebViewImpl.cpp

 /*
  * Copyright (C) 2011, 2012 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 2624 matching lines @@
 bool WebViewImpl::selectionBounds(WebRect& anchor, WebRect& focus) const
 {
     const Frame* frame = focusedCoreFrame();
     if (!frame || !frame->isLocalFrame())
         return false;
 
     const LocalFrame* localFrame = toLocalFrame(frame);
     if (!localFrame)
         return false;
     FrameSelection& selection = localFrame->selection();
-    if (!selection.isAvailable()) {
+    if (!selection.isAvailable() || selection.isNone()) {
         // plugins/mouse-capture-inside-shadow.html reaches here.
         return false;
     }
 
+    // TODO(xiaochengh): The use of updateStyleAndLayoutIgnorePendingStylesheets
+    // needs to be audited.  See http://crbug.com/590369 for more details.
+    localFrame->document()->updateStyleAndLayoutIgnorePendingStylesheets();
+
+    DocumentLifecycle::DisallowTransitionScope disallowTransition(localFrame->document()->lifecycle());
+
     if (selection.isCaret()) {
-        // TODO(xiaochengh): The use of updateStyleAndLayoutIgnorePendingStylesheets
-        // needs to be audited.  See http://crbug.com/590369 for more details.
-        localFrame->document()->updateStyleAndLayoutIgnorePendingStylesheets();
-
         anchor = focus = selection.absoluteCaretBounds();
     } else {
         const EphemeralRange selectedRange = selection.selection().toNormalizedEphemeralRange();
         if (selectedRange.isNull())
             return false;
         anchor = localFrame->editor().firstRectForRange(EphemeralRange(selectedRange.startPosition()));
         focus = localFrame->editor().firstRectForRange(EphemeralRange(selectedRange.endPosition()));
     }
 
     anchor = localFrame->view()->contentsToViewport(anchor);
@@ skipping 1924 matching lines @@
         return nullptr;
     return focusedFrame;
 }
 
 LocalFrame* WebViewImpl::focusedLocalFrameAvailableForIme() const
 {
     return m_imeAcceptEvents ? focusedLocalFrameInWidget() : nullptr;
 }
 
 } // namespace blink