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

Source/core/editing/ApplyBlockElementCommand.cpp

Index: Source/core/editing/ApplyBlockElementCommand.cpp
diff --git a/Source/core/editing/ApplyBlockElementCommand.cpp b/Source/core/editing/ApplyBlockElementCommand.cpp
index af2b1762e869fdec89ec6c2c686ccc3f8dea7069..ba071e33ae612465ee75126b36aa0c6104f88bfd 100644
--- a/Source/core/editing/ApplyBlockElementCommand.cpp
+++ b/Source/core/editing/ApplyBlockElementCommand.cpp
@@ -63,13 +63,13 @@ void ApplyBlockElementCommand::doApply()
     if (visibleStart.isNull() || visibleStart.isOrphan() || visibleEnd.isNull() || visibleEnd.isOrphan())
         return;
 
-    // When a selection ends at the start of a paragraph, we rarely paint 
-    // the selection gap before that paragraph, because there often is no gap.  
-    // In a case like this, it's not obvious to the user that the selection 
-    // ends "inside" that paragraph, so it would be confusing if Indent/Outdent 
+    // When a selection ends at the start of a paragraph, we rarely paint
+    // the selection gap before that paragraph, because there often is no gap.
+    // In a case like this, it's not obvious to the user that the selection
+    // ends "inside" that paragraph, so it would be confusing if Indent/Outdent
     // operated on that paragraph.
-    // FIXME: We paint the gap before some paragraphs that are indented with left 
-    // margin/padding, but not others.  We should make the gap painting more consistent and 
+    // FIXME: We paint the gap before some paragraphs that are indented with left
+    // margin/padding, but not others.  We should make the gap painting more consistent and
     // then use a left margin/padding rule here.
     if (visibleEnd != visibleStart && isStartOfParagraph(visibleEnd))
         setEndingSelection(VisibleSelection(visibleStart, visibleEnd.previous(CannotCrossEditingBoundary), endingSelection().isDirectional()));
@@ -133,7 +133,7 @@ void ApplyBlockElementCommand::formatSelection(const VisiblePosition& startOfSel
 
         formatRange(start, end, m_endOfLastParagraph, blockquoteForNextIndent);
 
-        // Don't put the next paragraph in the blockquote we just created for this paragraph unless 
+        // Don't put the next paragraph in the blockquote we just created for this paragraph unless
         // the next paragraph is in the same cell.
         if (enclosingCell && enclosingCell != enclosingNodeOfType(endOfNextParagraph.deepEquivalent(), &isTableCell))
             blockquoteForNextIndent = 0;