Fix trailing whitespace in .cpp, .h, and .idl files

Source/core/css/CSSRuleList.h

Index: Source/core/css/CSSRuleList.h
diff --git a/Source/core/css/CSSRuleList.h b/Source/core/css/CSSRuleList.h
index 3023a5dfa90253415c64e9d9b5706413a04f6ae8..f65b3667a4fbdb749e95d684a8094dcc76f94963 100644
--- a/Source/core/css/CSSRuleList.h
+++ b/Source/core/css/CSSRuleList.h
@@ -41,7 +41,7 @@ public:
 
     virtual unsigned length() const = 0;
     virtual CSSRule* item(unsigned index) const = 0;
-    
+
     virtual CSSStyleSheet* styleSheet() const = 0;
 
 protected:
@@ -56,10 +56,10 @@ public:
     virtual void deref();
 
     Vector<RefPtr<CSSRule> >& rules() { return m_rules; }
-    
+
     virtual CSSStyleSheet* styleSheet() const { return 0; }
 
-private:    
+private:
     StaticCSSRuleList();
     ~StaticCSSRuleList();
 
@@ -75,7 +75,7 @@ template <class Rule>
 class LiveCSSRuleList : public CSSRuleList {
 public:
     LiveCSSRuleList(Rule* rule) : m_rule(rule) { }
-    
+
     virtual void ref() { m_rule->ref(); }
     virtual void deref() { m_rule->deref(); }
 
@@ -83,7 +83,7 @@ private:
     virtual unsigned length() const { return m_rule->length(); }
     virtual CSSRule* item(unsigned index) const  { return m_rule->item(index); }
     virtual CSSStyleSheet* styleSheet() const { return m_rule->parentStyleSheet(); }
-    
+
     Rule* m_rule;
 };