Remove several unnecessary selection-related layout updates

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

Index: third_party/WebKit/Source/core/editing/DOMSelection.cpp
diff --git a/third_party/WebKit/Source/core/editing/DOMSelection.cpp b/third_party/WebKit/Source/core/editing/DOMSelection.cpp
index 9d5c79129f8a36f0c44ffb284c4f318fa609f68a..4e46f2363cdf7838c8bf3893e4f61d6845677530 100644
--- a/third_party/WebKit/Source/core/editing/DOMSelection.cpp
+++ b/third_party/WebKit/Source/core/editing/DOMSelection.cpp
@@ -343,12 +343,7 @@ void DOMSelection::setBaseAndExtent(Node* baseNode,
 
   clearCachedRangeIfSelectionOfDocument();
 
-  // TODO(editing-dev): The use of updateStyleAndLayoutIgnorePendingStylesheets
-  // needs to be audited.  See http://crbug.com/590369 for more details.
-  // In the long term, we should change FrameSelection::setSelection to take a
-  // parameter that does not require clean layout, so that modifying selection
-  // no longer performs synchronous layout by itself.
-  // TODO(editing-dev): Once SVG USE element doesn't modifies DOM tree, we
+  // TODO(editing-dev): Once SVG USE element doesn't modify DOM tree, we
   // should get rid of this update layout call.
   // See http://crbug.com/566281
   // See "svg/text/textpath-reference-crash.html"
@@ -424,10 +419,6 @@ void DOMSelection::modify(const String& alterString,
   else
     return;
 
-  // TODO(editing-dev): The use of updateStyleAndLayoutIgnorePendingStylesheets
-  // needs to be audited.  See http://crbug.com/590369 for more details.
-  frame()->document()->updateStyleAndLayoutIgnorePendingStylesheets();
-
   frame()->selection().modify(alter, direction, granularity);
 }
 
@@ -604,13 +595,6 @@ void DOMSelection::addRange(Range* newRange) {
     return;
   }
 
-  // TODO(xiaochengh): The use of updateStyleAndLayoutIgnorePendingStylesheets
-  // needs to be audited.  See http://crbug.com/590369 for more details.
-  // In the long term, we should change FrameSelection::setSelection to take a
-  // parameter that does not require clean layout, so that modifying selection
-  // no longer performs synchronous layout by itself.
-  frame()->document()->updateStyleAndLayoutIgnorePendingStylesheets();
-
   if (rangeCount() == 0) {
     selection.setSelectedRange(EphemeralRange(newRange), VP_DEFAULT_AFFINITY);
     cacheRangeIfSelectionOfDocument(newRange);