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

Source/core/css/Rect.h

Index: Source/core/css/Rect.h
diff --git a/Source/core/css/Rect.h b/Source/core/css/Rect.h
index 0b6490b353b6aa0886370e66b7e340a969541a7a..21978cd15fa9790d4bd8bc72cc93fd4b6c1148b2 100644
--- a/Source/core/css/Rect.h
+++ b/Source/core/css/Rect.h
@@ -77,7 +77,7 @@ private:
 class Rect : public RectBase, public RefCounted<Rect> {
 public:
     static PassRefPtr<Rect> create() { return adoptRef(new Rect); }
-    
+
     PassRefPtr<Rect> cloneForCSSOM() const { return adoptRef(new Rect(*this)); }
 
     String cssText() const
@@ -105,7 +105,7 @@ private:
 class Quad : public RectBase, public RefCounted<Quad> {
 public:
     static PassRefPtr<Quad> create() { return adoptRef(new Quad); }
-    
+
     PassRefPtr<Quad> cloneForCSSOM() const { return adoptRef(new Quad(*this)); }
 
     String cssText() const