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

Source/core/html/HTMLTextAreaElement.cpp

Index: Source/core/html/HTMLTextAreaElement.cpp
diff --git a/Source/core/html/HTMLTextAreaElement.cpp b/Source/core/html/HTMLTextAreaElement.cpp
index cf99917ef8873656bbf1e4a8c172e63df216ca3a..5e06cf9b6c7081280a571231241ca84a420ba0cb 100644
--- a/Source/core/html/HTMLTextAreaElement.cpp
+++ b/Source/core/html/HTMLTextAreaElement.cpp
@@ -222,7 +222,7 @@ bool HTMLTextAreaElement::appendFormData(FormDataList& encoding, bool)
     const AtomicString& dirnameAttrValue = fastGetAttribute(dirnameAttr);
     if (!dirnameAttrValue.isNull())
         encoding.appendData(dirnameAttrValue, directionForFormData());
-    return true;    
+    return true;
 }
 
 void HTMLTextAreaElement::reset()
@@ -249,7 +249,7 @@ bool HTMLTextAreaElement::shouldShowFocusRingOnMouseFocus() const
 void HTMLTextAreaElement::updateFocusAppearance(bool restorePreviousSelection)
 {
     if (!restorePreviousSelection || !hasCachedSelection()) {
-        // If this is the first focus, set a caret at the beginning of the text.  
+        // If this is the first focus, set a caret at the beginning of the text.
         // This matches some browsers' behavior; see bug 11746 Comment #15.
         // http://bugs.webkit.org/show_bug.cgi?id=11746#c15
         setSelectionRange(0, 0);