Convert USERSELECT_ALL to a runtime enabled feature.

Source/core/editing/VisibleUnits.cpp

 /*
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  *
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  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
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  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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 #include "config.h"
 #include "core/editing/VisibleUnits.h"
 
 #include "HTMLNames.h"
+#include "RuntimeEnabledFeatures.h"
 #include "bindings/v8/ExceptionState.h"
 #include "bindings/v8/ExceptionStatePlaceholder.h"
 #include "core/dom/Document.h"
 #include "core/dom/Element.h"
 #include "core/dom/NodeTraversal.h"
 #include "core/dom/Position.h"
 #include "core/dom/Text.h"
 #include "core/editing/RenderedPosition.h"
 #include "core/editing/TextIterator.h"
 #include "core/editing/VisiblePosition.h"
@@ skipping 1062 matching lines @@
 
     Node* startBlock = enclosingBlock(startNode);
 
     Node* node = startNode;
     Node* highestRoot = highestEditableRoot(p);
     int offset = p.deprecatedEditingOffset();
     Position::AnchorType type = p.anchorType();
 
     Node* n = startNode;
     while (n) {
-#if ENABLE(USERSELECT_ALL)
         if (boundaryCrossingRule == CannotCrossEditingBoundary && !Position::nodeIsUserSelectAll(n) && n->rendererIsEditable() != startNode->rendererIsEditable())
-#else
-        if (boundaryCrossingRule == CannotCrossEditingBoundary && n->rendererIsEditable() != startNode->rendererIsEditable())
-#endif
             break;
         if (boundaryCrossingRule == CanSkipOverEditingBoundary) {
             while (n && n->rendererIsEditable() != startNode->rendererIsEditable())
                 n = NodeTraversal::previousPostOrder(n, startBlock);
             if (!n || !n->isDescendantOf(highestRoot))
                 break;
         }
         RenderObject* r = n->renderer();
         if (!r) {
             n = NodeTraversal::previousPostOrder(n, startBlock);
@@ skipping 55 matching lines @@
     Node* startBlock = enclosingBlock(startNode);
     Node* stayInsideBlock = startBlock;
 
     Node* node = startNode;
     Node* highestRoot = highestEditableRoot(p);
     int offset = p.deprecatedEditingOffset();
     Position::AnchorType type = p.anchorType();
 
     Node* n = startNode;
     while (n) {
-#if ENABLE(USERSELECT_ALL)
         if (boundaryCrossingRule == CannotCrossEditingBoundary && !Position::nodeIsUserSelectAll(n) && n->rendererIsEditable() != startNode->rendererIsEditable())
-#else
-        if (boundaryCrossingRule == CannotCrossEditingBoundary && n->rendererIsEditable() != startNode->rendererIsEditable())
-#endif
             break;
         if (boundaryCrossingRule == CanSkipOverEditingBoundary) {
             while (n && n->rendererIsEditable() != startNode->rendererIsEditable())
                 n = NodeTraversal::next(n, stayInsideBlock);
             if (!n || !n->isDescendantOf(highestRoot))
                 break;
         }
 
         RenderObject* r = n->renderer();
         if (!r) {
@@ skipping 207 matching lines @@
 {
     return direction == LTR ? logicalStartOfLine(c) : logicalEndOfLine(c);
 }
 
 VisiblePosition rightBoundaryOfLine(const VisiblePosition& c, TextDirection direction)
 {
     return direction == LTR ? logicalEndOfLine(c) : logicalStartOfLine(c);
 }
 
 }