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

Source/core/platform/audio/ZeroPole.cpp

Index: Source/core/platform/audio/ZeroPole.cpp
diff --git a/Source/core/platform/audio/ZeroPole.cpp b/Source/core/platform/audio/ZeroPole.cpp
index bab135f5dfacd8841c492bb047fa8262110700ab..86daf4e356275ccc32d338944e1afeee6a300f30 100644
--- a/Source/core/platform/audio/ZeroPole.cpp
+++ b/Source/core/platform/audio/ZeroPole.cpp
@@ -44,7 +44,7 @@ void ZeroPole::process(const float *source, float *destination, unsigned framesT
     // Gain compensation to make 0dB @ 0Hz
     const float k1 = 1 / (1 - zero);
     const float k2 = 1 - pole;
-    
+
     // Member variables to locals.
     float lastX = m_lastX;
     float lastY = m_lastY;
@@ -62,7 +62,7 @@ void ZeroPole::process(const float *source, float *destination, unsigned framesT
 
         *destination++ = output2;
     }
-    
+
     // Locals to member variables. Flush denormals here so we don't
     // slow down the inner loop above.
     m_lastX = DenormalDisabler::flushDenormalFloatToZero(lastX);