Fix trailing whitespace in .cpp, .h, and .idl files (ex. Source/core)

Source/wtf/OwnPtr.h

Index: Source/wtf/OwnPtr.h
diff --git a/Source/wtf/OwnPtr.h b/Source/wtf/OwnPtr.h
index 98daa407dfb7fa7314ef5ef980d7f9ad6a7c889d..73ede43d15059598f8a06430c86679f31b7416fe 100644
--- a/Source/wtf/OwnPtr.h
+++ b/Source/wtf/OwnPtr.h
@@ -191,22 +191,22 @@ namespace WTF {
 
     template<typename T, typename U> inline bool operator==(const OwnPtr<T>& a, U* b)
     {
-        return a.get() == b; 
+        return a.get() == b;
     }
 
-    template<typename T, typename U> inline bool operator==(T* a, const OwnPtr<U>& b) 
+    template<typename T, typename U> inline bool operator==(T* a, const OwnPtr<U>& b)
     {
-        return a == b.get(); 
+        return a == b.get();
     }
 
     template<typename T, typename U> inline bool operator!=(const OwnPtr<T>& a, U* b)
     {
-        return a.get() != b; 
+        return a.get() != b;
     }
 
     template<typename T, typename U> inline bool operator!=(T* a, const OwnPtr<U>& b)
     {
-        return a != b.get(); 
+        return a != b.get();
     }
 
     template<typename T> inline typename OwnPtr<T>::PtrType getPtr(const OwnPtr<T>& p)