Convert //ppapi to use std::unique_ptr

ppapi/proxy/device_enumeration_resource_helper.cc

Index: ppapi/proxy/device_enumeration_resource_helper.cc
diff --git a/ppapi/proxy/device_enumeration_resource_helper.cc b/ppapi/proxy/device_enumeration_resource_helper.cc
index 45eee0e7cd1243b365231ec559a6a38a7b2972ed..3ff87b6ce6ef208e14ba0e58d96df01cde41b211 100644
--- a/ppapi/proxy/device_enumeration_resource_helper.cc
+++ b/ppapi/proxy/device_enumeration_resource_helper.cc
@@ -6,9 +6,10 @@
 
 #include <stddef.h>
 
+#include <memory>
+
 #include "base/bind.h"
 #include "base/logging.h"
-#include "base/memory/scoped_ptr.h"
 #include "ipc/ipc_message.h"
 #include "ipc/ipc_message_macros.h"
 #include "ppapi/c/pp_array_output.h"
@@ -147,7 +148,7 @@ void DeviceEnumerationResourceHelper::OnPluginMsgNotifyDeviceChange(
 
   CHECK(monitor_callback_.get());
 
-  scoped_ptr<PP_Resource[]> elements;
+  std::unique_ptr<PP_Resource[]> elements;
   uint32_t size = static_cast<uint32_t>(devices.size());
   if (size > 0) {
     elements.reset(new PP_Resource[size]);