Replace RenderArena with PartitionAlloc

Source/core/rendering/RenderBlockLineLayout.cpp

Index: Source/core/rendering/RenderBlockLineLayout.cpp
diff --git a/Source/core/rendering/RenderBlockLineLayout.cpp b/Source/core/rendering/RenderBlockLineLayout.cpp
index 4d9d6ec67f46868d8ead9513096ecd35230bce04..7792ac9a0fb2cb554b6d78c1a93fbe575b3c5af0 100644
--- a/Source/core/rendering/RenderBlockLineLayout.cpp
+++ b/Source/core/rendering/RenderBlockLineLayout.cpp
@@ -427,7 +427,7 @@ static inline void ensureCharacterGetsLineBox(LineMidpointState& lineMidpointSta
 
 static inline BidiRun* createRun(int start, int end, RenderObject* obj, InlineBidiResolver& resolver)
 {
-    return new (obj->renderArena()) BidiRun(start, end, obj, resolver.context(), resolver.dir());
+    return new BidiRun(start, end, obj, resolver.context(), resolver.dir());
 }
 
 void RenderBlock::appendRunsForObject(BidiRunList<BidiRun>& runs, int start, int end, RenderObject* obj, InlineBidiResolver& resolver)
@@ -1203,7 +1203,7 @@ inline BidiRun* RenderBlock::handleTrailingSpaces(BidiRunList<BidiRun>& bidiRuns
         while (BidiContext* parent = baseContext->parent())
             baseContext = parent;
 
-        BidiRun* newTrailingRun = new (renderArena()) BidiRun(firstSpace, trailingSpaceRun->m_stop, trailingSpaceRun->m_object, baseContext, OtherNeutral);
+        BidiRun* newTrailingRun = new BidiRun(firstSpace, trailingSpaceRun->m_stop, trailingSpaceRun->m_object, baseContext, OtherNeutral);
         trailingSpaceRun->m_stop = firstSpace;
         if (direction == LTR)
             bidiRuns.addRun(newTrailingRun);
@@ -1481,15 +1481,15 @@ private:
     RenderFlowThread* m_flowThread;
 };
 
-static void deleteLineRange(LineLayoutState& layoutState, RenderArena* arena, RootInlineBox* startLine, RootInlineBox* stopLine = 0)
+static void deleteLineRange(LineLayoutState& layoutState, RootInlineBox* startLine, RootInlineBox* stopLine = 0)
 {
     RootInlineBox* boxToDelete = startLine;
     while (boxToDelete && boxToDelete != stopLine) {
         layoutState.updateRepaintRangeFromBox(boxToDelete);
-        // Note: deleteLineRange(renderArena(), firstRootBox()) is not identical to deleteLineBoxTree().
+        // Note: deleteLineRange(firstRootBox()) is not identical to deleteLineBoxTree().
         // deleteLineBoxTree uses nextLineBox() instead of nextRootBox() when traversing.
         RootInlineBox* next = boxToDelete->nextRootBox();
-        boxToDelete->deleteLine(arena);
+        boxToDelete->deleteLine();
         boxToDelete = next;
     }
 }
@@ -1534,7 +1534,7 @@ void RenderBlock::layoutRunsAndFloats(LineLayoutState& layoutState, bool hasInli
     if (startLine) {
         if (!layoutState.usesRepaintBounds())
             layoutState.setRepaintRange(logicalHeight());
-        deleteLineRange(layoutState, renderArena(), startLine);
+        deleteLineRange(layoutState, startLine);
     }
 
     if (!layoutState.isFullLayout() && lastRootBox() && lastRootBox()->endsWithBreak()) {
@@ -1847,7 +1847,7 @@ void RenderBlock::layoutRunsAndFloatsInRange(LineLayoutState& layoutState, Inlin
 
                         if (availableLogicalWidthForLine(oldLogicalHeight + adjustment, layoutState.lineInfo().isFirstLine()) != oldLineWidth) {
                             // We have to delete this line, remove all floats that got added, and let line layout re-run.
-                            lineBox->deleteLine(renderArena());
+                            lineBox->deleteLine();
                             end = restartLayoutRunsAndFloatsInRange(oldLogicalHeight, oldLogicalHeight + adjustment, lastFloatFromPreviousLine, resolver, oldEnd);
                             continue;
                         }
@@ -1987,7 +1987,7 @@ void RenderBlock::linkToEndLineIfNeeded(LineLayoutState& layoutState)
             setLogicalHeight(lastRootBox()->lineBottomWithLeading());
         } else {
             // Delete all the remaining lines.
-            deleteLineRange(layoutState, renderArena(), layoutState.endLine());
+            deleteLineRange(layoutState, layoutState.endLine());
         }
     }
 
@@ -1998,7 +1998,7 @@ void RenderBlock::linkToEndLineIfNeeded(LineLayoutState& layoutState)
         if (layoutState.checkForFloatsFromLastLine()) {
             LayoutUnit bottomVisualOverflow = lastRootBox()->logicalBottomVisualOverflow();
             LayoutUnit bottomLayoutOverflow = lastRootBox()->logicalBottomLayoutOverflow();
-            TrailingFloatsRootInlineBox* trailingFloatsLineBox = new (renderArena()) TrailingFloatsRootInlineBox(this);
+            TrailingFloatsRootInlineBox* trailingFloatsLineBox = new TrailingFloatsRootInlineBox(this);
             m_lineBoxes.appendLineBox(trailingFloatsLineBox);
             trailingFloatsLineBox->setConstructed();
             GlyphOverflowAndFallbackFontsMap textBoxDataMap;
@@ -2061,7 +2061,7 @@ void RenderBlock::layoutInlineChildren(bool relayoutChildren, LayoutUnit& repain
     LineLayoutState layoutState(isFullLayout, repaintLogicalTop, repaintLogicalBottom, flowThread);
 
     if (isFullLayout)
-        lineBoxes()->deleteLineBoxes(renderArena());
+        lineBoxes()->deleteLineBoxes();
 
     // Text truncation kicks in in two cases:
     //     1) If your overflow isn't visible and your text-overflow-mode isn't clip.
@@ -2229,12 +2229,11 @@ RootInlineBox* RenderBlock::determineStartPosition(LineLayoutState& layoutState,
     if (layoutState.isFullLayout()) {
         // FIXME: This should just call deleteLineBoxTree, but that causes
         // crashes for fast/repaint tests.
-        RenderArena* arena = renderArena();
         curr = firstRootBox();
         while (curr) {
             // Note: This uses nextRootBox() insted of nextLineBox() like deleteLineBoxTree does.
             RootInlineBox* next = curr->nextRootBox();
-            curr->deleteLine(arena);
+            curr->deleteLine();
             curr = next;
         }
         ASSERT(!firstLineBox() && !lastLineBox());
@@ -2413,7 +2412,7 @@ bool RenderBlock::matchedEndLine(LineLayoutState& layoutState, const InlineBidiR
             }
 
             // Now delete the lines that we failed to sync.
-            deleteLineRange(layoutState, renderArena(), originalEndLine, result);
+            deleteLineRange(layoutState, originalEndLine, result);
             return matched;
         }
     }
@@ -3552,7 +3551,7 @@ void RenderBlock::layoutLineGridBox()
 
     setLineGridBox(0);
 
-    RootInlineBox* lineGridBox = new (renderArena()) RootInlineBox(this);
+    RootInlineBox* lineGridBox = new RootInlineBox(this);
     lineGridBox->setHasTextChildren(); // Needed to make the line ascent/descent actually be honored in quirks mode.
     lineGridBox->setConstructed();
     GlyphOverflowAndFallbackFontsMap textBoxDataMap;