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

Source/core/css/StyleRule.cpp

Index: Source/core/css/StyleRule.cpp
diff --git a/Source/core/css/StyleRule.cpp b/Source/core/css/StyleRule.cpp
index 82ac896e65a05de0f1605bd174e9f74208c75b6a..2979e181d90e3bb284e7a69bdd99ec363bd9d6ba 100644
--- a/Source/core/css/StyleRule.cpp
+++ b/Source/core/css/StyleRule.cpp
@@ -51,7 +51,7 @@ PassRefPtr<CSSRule> StyleRuleBase::createCSSOMWrapper(CSSStyleSheet* parentSheet
 }
 
 PassRefPtr<CSSRule> StyleRuleBase::createCSSOMWrapper(CSSRule* parentRule) const
-{ 
+{
     return createCSSOMWrapper(0, parentRule);
 }
 
@@ -215,7 +215,7 @@ MutableStylePropertySet* StyleRule::mutableProperties()
 }
 
 void StyleRule::setProperties(PassRefPtr<StylePropertySet> properties)
-{ 
+{
     m_properties = properties;
 }
 
@@ -243,7 +243,7 @@ MutableStylePropertySet* StyleRulePage::mutableProperties()
 }
 
 void StyleRulePage::setProperties(PassRefPtr<StylePropertySet> properties)
-{ 
+{
     m_properties = properties;
 }
 
@@ -270,7 +270,7 @@ MutableStylePropertySet* StyleRuleFontFace::mutableProperties()
 }
 
 void StyleRuleFontFace::setProperties(PassRefPtr<StylePropertySet> properties)
-{ 
+{
     m_properties = properties;
 }
 
@@ -292,7 +292,7 @@ void StyleRuleGroup::wrapperInsertRule(unsigned index, PassRefPtr<StyleRuleBase>
 {
     m_childRules.insert(index, rule);
 }
-    
+
 void StyleRuleGroup::wrapperRemoveRule(unsigned index)
 {
     m_childRules.remove(index);