Rename WebCore namespace to blink in Platform

Source/platform/audio/AudioPullFIFO.h

Index: Source/platform/audio/AudioPullFIFO.h
diff --git a/Source/platform/audio/AudioPullFIFO.h b/Source/platform/audio/AudioPullFIFO.h
index f607bf90a28462341edb22d64481e467adf23777..030f3332f1127df91dbacfb91ea36aa4c3c57a80 100644
--- a/Source/platform/audio/AudioPullFIFO.h
+++ b/Source/platform/audio/AudioPullFIFO.h
@@ -33,7 +33,7 @@
 #include "platform/audio/AudioFIFO.h"
 #include "platform/audio/AudioSourceProvider.h"
 
-namespace WebCore {
+namespace blink {
 
 // A FIFO (First In First Out) buffer to handle mismatches in buffer sizes between a provider and
 // receiver. The receiver will "pull" data from this FIFO. If data is already available in the
@@ -69,6 +69,6 @@ private:
     RefPtr<AudioBus> m_tempBus;
 };
 
-} // namespace WebCore
+} // namespace blink
 
 #endif // AudioPullFIFO.h