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

Source/core/page/UserContentURLPattern.h

Index: Source/core/page/UserContentURLPattern.h
diff --git a/Source/core/page/UserContentURLPattern.h b/Source/core/page/UserContentURLPattern.h
index 228d700613683600c82ecb39a46ebb8750e0ea21..7415b8870532c86c7235047852c2307cab977859 100644
--- a/Source/core/page/UserContentURLPattern.h
+++ b/Source/core/page/UserContentURLPattern.h
@@ -20,9 +20,9 @@
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
- 
+
 #ifndef UserContentURLPattern_h
 #define UserContentURLPattern_h
 
@@ -52,7 +52,7 @@ public:
     const String& path() const { return m_path; }
 
     bool matchSubdomains() const { return m_matchSubdomains; }
-    
+
     static bool matchesPatterns(const KURL&, const Vector<String>& whitelist, const Vector<String>& blacklist);
 
 private: