Fix trailing whitespace in .cpp, .h, and .idl files (ex. Source/core)

Source/modules/webaudio/AsyncAudioDecoder.cpp

Index: Source/modules/webaudio/AsyncAudioDecoder.cpp
diff --git a/Source/modules/webaudio/AsyncAudioDecoder.cpp b/Source/modules/webaudio/AsyncAudioDecoder.cpp
index 765d7047d70d5987f2e86870d984470acf7e7cec..ee8219e1956f829e65ebe59e61a2ff98562e0815 100644
--- a/Source/modules/webaudio/AsyncAudioDecoder.cpp
+++ b/Source/modules/webaudio/AsyncAudioDecoder.cpp
@@ -47,7 +47,7 @@ AsyncAudioDecoder::AsyncAudioDecoder()
 AsyncAudioDecoder::~AsyncAudioDecoder()
 {
     m_queue.kill();
-    
+
     // Stop thread.
     waitForThreadCompletion(m_threadID);
     m_threadID = 0;
@@ -110,7 +110,7 @@ void AsyncAudioDecoder::DecodingTask::decode()
 
     // Do the actual decoding and invoke the callback.
     m_audioBuffer = AudioBuffer::createFromAudioFileData(m_audioData->data(), m_audioData->byteLength(), false, sampleRate());
-    
+
     // Decoding is finished, but we need to do the callbacks on the main thread.
     callOnMainThread(notifyCompleteDispatch, this);
 }