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

Source/core/html/parser/HTMLScriptRunnerHost.h

Index: Source/core/html/parser/HTMLScriptRunnerHost.h
diff --git a/Source/core/html/parser/HTMLScriptRunnerHost.h b/Source/core/html/parser/HTMLScriptRunnerHost.h
index 4302c0b4d17391822157db077ae38bd1cb372e51..58f8286f0c471a01e26859e18372ac7b6568491d 100644
--- a/Source/core/html/parser/HTMLScriptRunnerHost.h
+++ b/Source/core/html/parser/HTMLScriptRunnerHost.h
@@ -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.
  */
 
 #ifndef HTMLScriptRunnerHost_h
@@ -48,7 +48,7 @@ public:
 
     virtual bool hasPreloadScanner() const = 0;
     virtual void appendCurrentInputStreamToPreloadScannerAndScan() = 0;
-    
+
 };
 
 }