Some scoped_ptr -> std::unique_ptr conversion, especially under //mojo.

mojo/message_pump/message_pump_mojo_unittest.cc

Index: mojo/message_pump/message_pump_mojo_unittest.cc
diff --git a/mojo/message_pump/message_pump_mojo_unittest.cc b/mojo/message_pump/message_pump_mojo_unittest.cc
index 42e5053aa8d763d2aa407febd80cd54981497965..cdacca3a55f0f23610a0de1331d2e4ca97beb100 100644
--- a/mojo/message_pump/message_pump_mojo_unittest.cc
+++ b/mojo/message_pump/message_pump_mojo_unittest.cc
@@ -14,11 +14,7 @@ namespace mojo {
 namespace common {
 namespace test {
 
-scoped_ptr<base::MessagePump> CreateMojoMessagePump() {
-  return scoped_ptr<base::MessagePump>(new MessagePumpMojo());
-}
-
-RUN_MESSAGE_LOOP_TESTS(Mojo, &CreateMojoMessagePump);
+RUN_MESSAGE_LOOP_TESTS(Mojo, &MessagePumpMojo::Create);
 
 class CountingMojoHandler : public MessagePumpMojoHandler {
  public: