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

Source/core/platform/audio/AudioArray.h

Index: Source/core/platform/audio/AudioArray.h
diff --git a/Source/core/platform/audio/AudioArray.h b/Source/core/platform/audio/AudioArray.h
index a70903b86a2f8ae2bd7a1440c7d4f9f3888ad876..f611a2b10ab61b186a58e537dbc73ce64639d5b9 100644
--- a/Source/core/platform/audio/AudioArray.h
+++ b/Source/core/platform/audio/AudioArray.h
@@ -57,7 +57,7 @@ public:
         // and copyToRange(). Also check for integer overflow.
         if (n > std::numeric_limits<unsigned>::max() / sizeof(T))
             CRASH();
-      
+
         unsigned initialSize = sizeof(T) * n;
 
 #if USE(WEBAUDIO_FFMPEG) || USE(WEBAUDIO_OPENMAX_DL_FFT)
@@ -68,9 +68,9 @@ public:
 
         if (m_allocation)
             fastFree(m_allocation);
-        
+
         bool isAllocationGood = false;
-        
+
         while (!isAllocationGood) {
             // Initially we try to allocate the exact size, but if it's not aligned
             // then we'll have to reallocate and from then on allocate extra.