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

Source/core/editing/ReplaceSelectionCommand.h

Index: Source/core/editing/ReplaceSelectionCommand.h
diff --git a/Source/core/editing/ReplaceSelectionCommand.h b/Source/core/editing/ReplaceSelectionCommand.h
index 112508ef5a36271906925ad8ad2e4a1c292cfded..fce407d6057bb9b73bc0aef896d06f594501aca1 100644
--- a/Source/core/editing/ReplaceSelectionCommand.h
+++ b/Source/core/editing/ReplaceSelectionCommand.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 ReplaceSelectionCommand_h
@@ -57,7 +57,7 @@ private:
 
     virtual void doApply();
     virtual EditAction editingAction() const;
-    
+
     class InsertedNodes {
     public:
         void respondToNodeInsertion(Node*);
@@ -78,21 +78,21 @@ private:
 
     void updateNodesInserted(Node*);
     bool shouldRemoveEndBR(Node*, const VisiblePosition&);
-    
+
     bool shouldMergeStart(bool, bool, bool);
     bool shouldMergeEnd(bool selectionEndWasEndOfParagraph);
     bool shouldMerge(const VisiblePosition&, const VisiblePosition&);
-    
+
     void mergeEndIfNeeded();
-    
+
     void removeUnrenderedTextNodesAtEnds(InsertedNodes&);
-    
+
     void removeRedundantStylesAndKeepStyleSpanInline(InsertedNodes&);
     void makeInsertedContentRoundTrippableWithHTMLTreeBuilder(InsertedNodes&);
     void moveNodeOutOfAncestor(PassRefPtr<Node>, PassRefPtr<Node> ancestor);
     void handleStyleSpans(InsertedNodes&);
     void handlePasteAsQuotationNode();
-    
+
     VisiblePosition positionAtStartOfInsertedContent() const;
     VisiblePosition positionAtEndOfInsertedContent() const;