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

Source/core/loader/SinkDocument.cpp

Index: Source/core/loader/SinkDocument.cpp
diff --git a/Source/core/loader/SinkDocument.cpp b/Source/core/loader/SinkDocument.cpp
index 307990ce1010b6b30d433af2a19ebb5d028a40cc..11839f7318bcf10822345b75ba49d4095e335f10 100644
--- a/Source/core/loader/SinkDocument.cpp
+++ b/Source/core/loader/SinkDocument.cpp
@@ -20,7 +20,7 @@
  * 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.
  */
 
 #include "config.h"
@@ -36,7 +36,7 @@ public:
     {
         return adoptRef(new SinkDocumentParser(document));
     }
-    
+
 private:
     SinkDocumentParser(SinkDocument* document)
         : RawDataDocumentParser(document)