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

Source/core/html/parser/HTMLTokenizer.h

Index: Source/core/html/parser/HTMLTokenizer.h
diff --git a/Source/core/html/parser/HTMLTokenizer.h b/Source/core/html/parser/HTMLTokenizer.h
index 809d291716293e9db242548882e6255cfeae079e..bbfa0f2f9b258671ac8ebbb12e18d021194b23f6 100644
--- a/Source/core/html/parser/HTMLTokenizer.h
+++ b/Source/core/html/parser/HTMLTokenizer.h
@@ -21,7 +21,7 @@
  * 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.
  */
 
 #ifndef HTMLTokenizer_h
@@ -216,7 +216,7 @@ private:
         source.advanceAndUpdateLineNumber();
         return true;
     }
-    
+
     inline bool emitAndReconsumeIn(SegmentedString&, State state)
     {
         saveEndTagNameIfNeeded();