Add DISABLE_CFI_PERF attribute on the methods with CFI checks disabled.

third_party/WebKit/Source/core/layout/LayoutBlock.cpp

Index: third_party/WebKit/Source/core/layout/LayoutBlock.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutBlock.cpp b/third_party/WebKit/Source/core/layout/LayoutBlock.cpp
index de0d5baf6520b1c5c58ce5c319418f4b9cb0cab6..4225624582071ab18d901dc9936dba09adf7e073 100644
--- a/third_party/WebKit/Source/core/layout/LayoutBlock.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutBlock.cpp
@@ -406,6 +406,7 @@ bool LayoutBlock::widthAvailableToChildrenHasChanged()
     return widthAvailableToChildrenHasChanged;
 }
 
+DISABLE_CFI_PERF
 bool LayoutBlock::updateLogicalWidthAndColumnWidth()
 {
     LayoutUnit oldWidth = logicalWidth();
@@ -427,6 +428,7 @@ void LayoutBlock::addOverflowFromChildren()
         addOverflowFromBlockChildren();
 }
 
+DISABLE_CFI_PERF
 void LayoutBlock::computeOverflow(LayoutUnit oldClientAfterEdge, bool)
 {
     m_overflow.reset();
@@ -492,6 +494,7 @@ void LayoutBlock::addVisualOverflowFromTheme()
     addSelfVisualOverflow(LayoutRect(inflatedRect));
 }
 
+DISABLE_CFI_PERF
 bool LayoutBlock::createsNewFormattingContext() const
 {
     return isInlineBlockOrInlineTable() || isFloatingOrOutOfFlowPositioned() || hasOverflowClip() || isFlexItemIncludingDeprecated()
@@ -1255,6 +1258,7 @@ void LayoutBlock::computeIntrinsicLogicalWidths(LayoutUnit& minLogicalWidth, Lay
     minLogicalWidth += scrollbarWidth;
 }
 
+DISABLE_CFI_PERF
 void LayoutBlock::computePreferredLogicalWidths()
 {
     ASSERT(preferredLogicalWidthsDirty());
@@ -1386,6 +1390,7 @@ void LayoutBlock::computeBlockPreferredLogicalWidths(LayoutUnit& minLogicalWidth
     maxLogicalWidth = std::max(floatLeftWidth + floatRightWidth, maxLogicalWidth);
 }
 
+DISABLE_CFI_PERF
 void LayoutBlock::computeChildPreferredLogicalWidths(LayoutObject& child, LayoutUnit& minPreferredLogicalWidth, LayoutUnit& maxPreferredLogicalWidth) const
 {
     if (child.isBox() && child.isHorizontalWritingMode() != isHorizontalWritingMode()) {