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

Source/core/html/HTMLBodyElement.cpp

Index: Source/core/html/HTMLBodyElement.cpp
diff --git a/Source/core/html/HTMLBodyElement.cpp b/Source/core/html/HTMLBodyElement.cpp
index 97fd4995778252d0ce15fe013ce400c4a52737a0..e9a386bdbcdc8de0fc221c2064ff2b0219061c40 100644
--- a/Source/core/html/HTMLBodyElement.cpp
+++ b/Source/core/html/HTMLBodyElement.cpp
@@ -311,7 +311,7 @@ int HTMLBodyElement::scrollHeight()
     Document* document = this->document();
     document->updateLayoutIgnorePendingStylesheets();
     FrameView* view = document->view();
-    return view ? adjustForZoom(view->contentsHeight(), document) : 0;    
+    return view ? adjustForZoom(view->contentsHeight(), document) : 0;
 }
 
 int HTMLBodyElement::scrollWidth()
@@ -320,7 +320,7 @@ int HTMLBodyElement::scrollWidth()
     Document* document = this->document();
     document->updateLayoutIgnorePendingStylesheets();
     FrameView* view = document->view();
-    return view ? adjustForZoom(view->contentsWidth(), document) : 0;    
+    return view ? adjustForZoom(view->contentsWidth(), document) : 0;
 }
 
 void HTMLBodyElement::addSubresourceAttributeURLs(ListHashSet<KURL>& urls) const