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

Source/core/platform/CalculationValue.cpp

Index: Source/core/platform/CalculationValue.cpp
diff --git a/Source/core/platform/CalculationValue.cpp b/Source/core/platform/CalculationValue.cpp
index 8d6b45e033a0385bf28b2dde0aeada2d0066e373..e45aae5fbe20fa26946211ea26b6aab1444aa9b3 100644
--- a/Source/core/platform/CalculationValue.cpp
+++ b/Source/core/platform/CalculationValue.cpp
@@ -63,8 +63,8 @@ PassRefPtr<CalculationValue> CalculationValue::create(PassOwnPtr<CalcExpressionN
 float CalculationValue::evaluate(float maxValue) const
 {
     float result = m_value->evaluate(maxValue);
-    // FIXME calc https://webkit.org/b/80411 : result is NaN when there is a division 
-    // by zero which isn't found at parse time. 
+    // FIXME calc https://webkit.org/b/80411 : result is NaN when there is a division
+    // by zero which isn't found at parse time.
     if (std::isnan(result))
         return 0;
     return m_isNonNegative && result < 0 ? 0 : result;