Declare methods defined in LayoutObjectInlines.h as inline.

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

Index: third_party/WebKit/Source/core/layout/LayoutObject.h
diff --git a/third_party/WebKit/Source/core/layout/LayoutObject.h b/third_party/WebKit/Source/core/layout/LayoutObject.h
index 5aafc6c425974d05737258d9b7694d29a1268e14..1ca58f7544d0ec829b15d117513c64c738a9cd9e 100644
--- a/third_party/WebKit/Source/core/layout/LayoutObject.h
+++ b/third_party/WebKit/Source/core/layout/LayoutObject.h
@@ -1085,10 +1085,10 @@ public:
     ComputedStyle& mutableStyleRef() const { ASSERT(m_style); return *m_style; }
 
     /* The following methods are inlined in LayoutObjectInlines.h */
-    const ComputedStyle* firstLineStyle() const;
-    const ComputedStyle& firstLineStyleRef() const;
-    const ComputedStyle* style(bool firstLine) const;
-    const ComputedStyle& styleRef(bool firstLine) const;
+    inline const ComputedStyle* firstLineStyle() const;
+    inline const ComputedStyle& firstLineStyleRef() const;
+    inline const ComputedStyle* style(bool firstLine) const;
+    inline const ComputedStyle& styleRef(bool firstLine) const;
 
     static inline Color resolveColor(const ComputedStyle& styleToUse, int colorProperty)
     {