Change most uses of Pickle to base::Pickle

sandbox/linux/syscall_broker/broker_client.cc

Index: sandbox/linux/syscall_broker/broker_client.cc
diff --git a/sandbox/linux/syscall_broker/broker_client.cc b/sandbox/linux/syscall_broker/broker_client.cc
index 8d04197160a9accdb67c84f2f132811ace873d17..b651b7fa262df2bce6abd247e8d59dd6614ed95b 100644
--- a/sandbox/linux/syscall_broker/broker_client.cc
+++ b/sandbox/linux/syscall_broker/broker_client.cc
@@ -65,7 +65,7 @@ int BrokerClient::PathAndFlagsSyscall(IPCCommand syscall_type,
     }
   }
 
-  Pickle write_pickle;
+  base::Pickle write_pickle;
   write_pickle.WriteInt(syscall_type);
   write_pickle.WriteString(pathname);
   write_pickle.WriteInt(flags);
@@ -87,8 +87,8 @@ int BrokerClient::PathAndFlagsSyscall(IPCCommand syscall_type,
     return -ENOMEM;
   }
 
-  Pickle read_pickle(reinterpret_cast<char*>(reply_buf), msg_len);
-  PickleIterator iter(read_pickle);
+  base::Pickle read_pickle(reinterpret_cast<char*>(reply_buf), msg_len);
+  base::PickleIterator iter(read_pickle);
   int return_value = -1;
   // Now deserialize the return value and eventually return the file
   // descriptor.