Add DISABLE_CFI_PERF attribute on the methods with CFI checks disabled.

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

Index: third_party/WebKit/Source/core/layout/LayoutBlock.h
diff --git a/third_party/WebKit/Source/core/layout/LayoutBlock.h b/third_party/WebKit/Source/core/layout/LayoutBlock.h
index 97075b36f471ea1378c5215d37fd8755b1c3dcc4..d5ffb0d78ba5d50180c25bf33a0db14bb97c3ac2 100644
--- a/third_party/WebKit/Source/core/layout/LayoutBlock.h
+++ b/third_party/WebKit/Source/core/layout/LayoutBlock.h
@@ -200,9 +200,9 @@ public:
     LayoutUnit logicalHeightForChild(const LayoutBox& child) const { return isHorizontalWritingMode() ? child.size().height() : child.size().width(); }
     LayoutSize logicalSizeForChild(const LayoutBox& child) const { return isHorizontalWritingMode() ? child.size() : child.size().transposedSize(); }
     LayoutUnit logicalTopForChild(const LayoutBox& child) const { return isHorizontalWritingMode() ? child.location().y() : child.location().x(); }
-    LayoutUnit marginBeforeForChild(const LayoutBoxModelObject& child) const { return child.marginBefore(style()); }
-    LayoutUnit marginAfterForChild(const LayoutBoxModelObject& child) const { return child.marginAfter(style()); }
-    LayoutUnit marginStartForChild(const LayoutBoxModelObject& child) const { return child.marginStart(style()); }
+    DISABLE_CFI_PERF LayoutUnit marginBeforeForChild(const LayoutBoxModelObject& child) const { return child.marginBefore(style()); }
+    DISABLE_CFI_PERF LayoutUnit marginAfterForChild(const LayoutBoxModelObject& child) const { return child.marginAfter(style()); }
+    DISABLE_CFI_PERF LayoutUnit marginStartForChild(const LayoutBoxModelObject& child) const { return child.marginStart(style()); }
     LayoutUnit marginEndForChild(const LayoutBoxModelObject& child) const { return child.marginEnd(style()); }
     void setMarginStartForChild(LayoutBox& child, LayoutUnit value) const { child.setMarginStart(value, style()); }
     void setMarginEndForChild(LayoutBox& child, LayoutUnit value) const { child.setMarginEnd(value, style()); }
@@ -214,7 +214,7 @@ public:
     virtual void scrollbarsChanged(bool /*horizontalScrollbarChanged*/, bool /*verticalScrollbarChanged*/);
 
     LayoutUnit availableLogicalWidthForContent() const { return (logicalRightOffsetForContent() - logicalLeftOffsetForContent()).clampNegativeToZero(); }
-    LayoutUnit logicalLeftOffsetForContent() const { return isHorizontalWritingMode() ? borderLeft() + paddingLeft() : borderTop() + paddingTop(); }
+    DISABLE_CFI_PERF LayoutUnit logicalLeftOffsetForContent() const { return isHorizontalWritingMode() ? borderLeft() + paddingLeft() : borderTop() + paddingTop(); }
     LayoutUnit logicalRightOffsetForContent() const { return logicalLeftOffsetForContent() + availableLogicalWidth(); }
     LayoutUnit startOffsetForContent() const { return style()->isLeftToRightDirection() ? logicalLeftOffsetForContent() : logicalWidth() - logicalRightOffsetForContent(); }
     LayoutUnit endOffsetForContent() const { return !style()->isLeftToRightDirection() ? logicalLeftOffsetForContent() : logicalWidth() - logicalRightOffsetForContent(); }