Convert //ppapi to use std::unique_ptr

ppapi/proxy/ppb_flash_message_loop_proxy.h

Index: ppapi/proxy/ppb_flash_message_loop_proxy.h
diff --git a/ppapi/proxy/ppb_flash_message_loop_proxy.h b/ppapi/proxy/ppb_flash_message_loop_proxy.h
index 9f0a3f9a3f3ac72d4df0970f4dc34d2e99eab8bb..008473185ad9615dd45bf30345fe820863aa0b5d 100644
--- a/ppapi/proxy/ppb_flash_message_loop_proxy.h
+++ b/ppapi/proxy/ppb_flash_message_loop_proxy.h
@@ -7,9 +7,10 @@
 
 #include <stdint.h>
 
+#include <memory>
+
 #include "base/compiler_specific.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_resource.h"
@@ -45,7 +46,8 @@ class PPB_Flash_MessageLoop_Proxy
                 IPC::Message* reply);
   void OnMsgQuit(const ppapi::HostResource& flash_message_loop);
 
-  void WillQuitSoon(scoped_ptr<IPC::Message> reply_message, int32_t result);
+  void WillQuitSoon(std::unique_ptr<IPC::Message> reply_message,
+                    int32_t result);
 
   DISALLOW_COPY_AND_ASSIGN(PPB_Flash_MessageLoop_Proxy);
 };