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

Source/core/editing/EditAction.h

Index: Source/core/editing/EditAction.h
diff --git a/Source/core/editing/EditAction.h b/Source/core/editing/EditAction.h
index 912e9312b3ea227f680b3299f0e97d0f47d6dc38..56f7062c265c040414be2b60e5b50af5c4d16fb3 100644
--- a/Source/core/editing/EditAction.h
+++ b/Source/core/editing/EditAction.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 EditAction_h
@@ -67,7 +67,7 @@ namespace WebCore {
         EditActionInsertList,
         EditActionIndent,
         EditActionOutdent
-    } EditAction;    
+    } EditAction;
 }
 
 #endif