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

Source/core/accessibility/AccessibilitySVGRoot.cpp

Index: Source/core/accessibility/AccessibilitySVGRoot.cpp
diff --git a/Source/core/accessibility/AccessibilitySVGRoot.cpp b/Source/core/accessibility/AccessibilitySVGRoot.cpp
index 088017a62f75c7e716706e36c03136e5ad7d3e6d..4d811207212be6d08ecf525b650211ec951a565d 100644
--- a/Source/core/accessibility/AccessibilitySVGRoot.cpp
+++ b/Source/core/accessibility/AccessibilitySVGRoot.cpp
@@ -46,16 +46,16 @@ PassRefPtr<AccessibilitySVGRoot> AccessibilitySVGRoot::create(RenderObject* rend
 {
     return adoptRef(new AccessibilitySVGRoot(renderer));
 }
-    
+
 AccessibilityObject* AccessibilitySVGRoot::parentObject() const
 {
     // If a parent was set because this is a remote SVG resource, use that
     // but otherwise, we should rely on the standard render tree for the parent.
     if (m_parent)
         return m_parent;
-    
+
     return AccessibilityRenderObject::parentObject();
 }
 
-    
+
 } // namespace WebCore