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

Source/core/editing/WrapContentsInDummySpanCommand.cpp

Index: Source/core/editing/WrapContentsInDummySpanCommand.cpp
diff --git a/Source/core/editing/WrapContentsInDummySpanCommand.cpp b/Source/core/editing/WrapContentsInDummySpanCommand.cpp
index 593f41fcbbab158ab56a35e009f55cf1a5497331..5013f928bcb41ce13d2d8a479e7c81f4b5d9e02c 100644
--- a/Source/core/editing/WrapContentsInDummySpanCommand.cpp
+++ b/Source/core/editing/WrapContentsInDummySpanCommand.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"
@@ -55,10 +55,10 @@ void WrapContentsInDummySpanCommand::executeApply()
 void WrapContentsInDummySpanCommand::doApply()
 {
     m_dummySpan = createStyleSpanElement(document());
-    
+
     executeApply();
 }
-    
+
 void WrapContentsInDummySpanCommand::doUnapply()
 {
     ASSERT(m_element);
@@ -80,7 +80,7 @@ void WrapContentsInDummySpanCommand::doUnapply()
 void WrapContentsInDummySpanCommand::doReapply()
 {
     ASSERT(m_element);
-    
+
     if (!m_dummySpan || !m_element->rendererIsEditable())
         return;
 
@@ -94,5 +94,5 @@ void WrapContentsInDummySpanCommand::getNodesInCommand(HashSet<Node*>& nodes)
     addNodeAndDescendants(m_dummySpan.get(), nodes);
 }
 #endif
-    
+
 } // namespace WebCore