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

Source/core/page/UserStyleSheetTypes.h

Index: Source/core/page/UserStyleSheetTypes.h
diff --git a/Source/core/page/UserStyleSheetTypes.h b/Source/core/page/UserStyleSheetTypes.h
index 094a6152d8a587777db5ef951086f113a511925f..6ddebdacc6250fd9a5da82f45b8412580007044f 100644
--- a/Source/core/page/UserStyleSheetTypes.h
+++ b/Source/core/page/UserStyleSheetTypes.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 UserStyleSheetTypes_h
 #define UserStyleSheetTypes_h
 
@@ -38,5 +38,5 @@ class UserStyleSheet;
 typedef Vector<OwnPtr<UserStyleSheet> > UserStyleSheetVector;
 
 } // namespace WebCore
- 
+
 #endif // UserStyleSheetTypes_h