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

Source/core/platform/audio/AudioFIFO.cpp

Index: Source/core/platform/audio/AudioFIFO.cpp
diff --git a/Source/core/platform/audio/AudioFIFO.cpp b/Source/core/platform/audio/AudioFIFO.cpp
index efa376731906e562a93433ba6c0daf55dd428428..f468d25ffb0c4d05c87fa47b5dbefe82445df46c 100644
--- a/Source/core/platform/audio/AudioFIFO.cpp
+++ b/Source/core/platform/audio/AudioFIFO.cpp
@@ -113,7 +113,7 @@ void AudioFIFO::push(const AudioBus* sourceBus)
         if (part2Length)
             memcpy(destination, source + part1Length, part2Length * sizeof(*destination));
     }
-        
+
     m_framesInFifo += sourceLength;
     ASSERT(m_framesInFifo <= m_fifoLength);
     m_writeIndex = updateIndex(m_writeIndex, sourceLength);