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

Source/core/platform/audio/ZeroPole.h

Index: Source/core/platform/audio/ZeroPole.h
diff --git a/Source/core/platform/audio/ZeroPole.h b/Source/core/platform/audio/ZeroPole.h
index 4cb1d174563f175b28caac955da56268bde1ddf3..a6de4e2f21bcba1595c86774baa7812bf4e62b5b 100644
--- a/Source/core/platform/audio/ZeroPole.h
+++ b/Source/core/platform/audio/ZeroPole.h
@@ -47,10 +47,10 @@ public:
 
     // Reset filter state.
     void reset() { m_lastX = 0; m_lastY = 0; }
-    
+
     void setZero(float zero) { m_zero = zero; }
     void setPole(float pole) { m_pole = pole; }
-    
+
     float zero() const { return m_zero; }
     float pole() const { return m_pole; }