Moved nonproperty 'unique' to be generated in ComputedStyleBase.

third_party/WebKit/Source/core/style/ComputedStyle.h

Index: third_party/WebKit/Source/core/style/ComputedStyle.h
diff --git a/third_party/WebKit/Source/core/style/ComputedStyle.h b/third_party/WebKit/Source/core/style/ComputedStyle.h
index 55a3a1a1084a559e7ebb503cf9083a1b3453161e..89ece10306be4b767ab94366ef247b7944d2047e 100644
--- a/third_party/WebKit/Source/core/style/ComputedStyle.h
+++ b/third_party/WebKit/Source/core/style/ComputedStyle.h
@@ -2595,11 +2595,6 @@ class CORE_EXPORT ComputedStyle : public ComputedStyleBase,
     SET_VAR(m_rareNonInheritedData, m_isStackingContext, b);
   }
 
-  // A unique style is one that has matches something that makes it impossible
-  // to share.
-  bool unique() const { return m_nonInheritedData.m_unique; }
-  void setUnique() { m_nonInheritedData.m_unique = true; }
-
   float textAutosizingMultiplier() const {
     return m_styleInheritedData->textAutosizingMultiplier;
   }