Rename WebKit namespace to blink

Source/platform/PurgeableBuffer.h

Index: Source/platform/PurgeableBuffer.h
diff --git a/Source/platform/PurgeableBuffer.h b/Source/platform/PurgeableBuffer.h
index 8c5fb13c23d2a9ed8f73b9dbf2abe4023dbce27b..7d058737d088c75fd74be8e78c182892569cc59c 100644
--- a/Source/platform/PurgeableBuffer.h
+++ b/Source/platform/PurgeableBuffer.h
@@ -31,7 +31,7 @@
 #include "wtf/PassOwnPtr.h"
 #include "platform/PlatformExport.h"
 
-namespace WebKit {
+namespace blink {
 class WebDiscardableMemory;
 }
 
@@ -60,9 +60,9 @@ private:
         Purged
     };
 
-    PurgeableBuffer(PassOwnPtr<WebKit::WebDiscardableMemory>, const char* data, size_t);
+    PurgeableBuffer(PassOwnPtr<blink::WebDiscardableMemory>, const char* data, size_t);
 
-    OwnPtr<WebKit::WebDiscardableMemory> m_memory;
+    OwnPtr<blink::WebDiscardableMemory> m_memory;
     size_t m_size;
     State m_state;
 };