Remove all the swap() stuff in the PPAPI C++ wrappers....

ppapi/cpp/dev/buffer_dev.h

Index: ppapi/cpp/dev/buffer_dev.h
===================================================================
--- ppapi/cpp/dev/buffer_dev.h	(revision 67885)
+++ ppapi/cpp/dev/buffer_dev.h	(working copy)
@@ -23,7 +23,6 @@
   ~Buffer_Dev();
 
   Buffer_Dev& operator=(const Buffer_Dev& other);
-  void swap(Buffer_Dev& other);
 
   int32_t size() const { return size_; }
   void* data() const { return data_; }