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

Source/bindings/v8/V8PerIsolateData.h

Index: Source/bindings/v8/V8PerIsolateData.h
diff --git a/Source/bindings/v8/V8PerIsolateData.h b/Source/bindings/v8/V8PerIsolateData.h
index 5423e7de8eabeddcb7d2299ba1f2362dfed82513..830ae6edc37cfafb5d28bccaa7388331c0e11d9b 100644
--- a/Source/bindings/v8/V8PerIsolateData.h
+++ b/Source/bindings/v8/V8PerIsolateData.h
@@ -59,7 +59,7 @@ public:
     {
         ASSERT(isolate);
         ASSERT(isolate->GetData());
-        return static_cast<V8PerIsolateData*>(isolate->GetData()); 
+        return static_cast<V8PerIsolateData*>(isolate->GetData());
     }
     static void dispose(v8::Isolate*);
 
@@ -94,7 +94,7 @@ public:
 
     V8HiddenPropertyName* hiddenPropertyName() { return m_hiddenPropertyName.get(); }
 
-    void registerDOMDataStore(DOMDataStore* domDataStore) 
+    void registerDOMDataStore(DOMDataStore* domDataStore)
     {
         ASSERT(m_domDataList.find(domDataStore) == notFound);
         m_domDataList.append(domDataStore);