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

Source/modules/webaudio/DefaultAudioDestinationNode.cpp

Index: Source/modules/webaudio/DefaultAudioDestinationNode.cpp
diff --git a/Source/modules/webaudio/DefaultAudioDestinationNode.cpp b/Source/modules/webaudio/DefaultAudioDestinationNode.cpp
index 615d1007ff08e805f432491df10c3208457b0daf..ce6a45d6d28c7cfb53f98fa41c023f6fa583a3a3 100644
--- a/Source/modules/webaudio/DefaultAudioDestinationNode.cpp
+++ b/Source/modules/webaudio/DefaultAudioDestinationNode.cpp
@@ -36,7 +36,7 @@
 const unsigned EnabledInputChannels = 2;
 
 namespace WebCore {
-    
+
 DefaultAudioDestinationNode::DefaultAudioDestinationNode(AudioContext* context)
     : AudioDestinationNode(context, AudioDestination::hardwareSampleRate())
     , m_numberOfInputChannels(0)
@@ -54,7 +54,7 @@ DefaultAudioDestinationNode::~DefaultAudioDestinationNode()
 
 void DefaultAudioDestinationNode::initialize()
 {
-    ASSERT(isMainThread()); 
+    ASSERT(isMainThread());
     if (isInitialized())
         return;
 
@@ -64,7 +64,7 @@ void DefaultAudioDestinationNode::initialize()
 
 void DefaultAudioDestinationNode::uninitialize()
 {
-    ASSERT(isMainThread()); 
+    ASSERT(isMainThread());
     if (!isInitialized())
         return;
 
@@ -78,7 +78,7 @@ void DefaultAudioDestinationNode::createDestination()
 {
     float hardwareSampleRate = AudioDestination::hardwareSampleRate();
     LOG(WebAudio, ">>>> hardwareSampleRate = %f\n", hardwareSampleRate);
-    
+
     m_destination = AudioDestination::create(*this, m_inputDeviceId, m_numberOfInputChannels, channelCount(), hardwareSampleRate);
 }