Rename FilePath -> base::FilePath in various toplevel directories

ipc/ipc_channel_posix.cc

Index: ipc/ipc_channel_posix.cc
diff --git a/ipc/ipc_channel_posix.cc b/ipc/ipc_channel_posix.cc
index 090615208e6d16e384b6070781310271ab1117eb..615704a6a64195b0c7c766ef6f9bfdfe994b4dda 100644
--- a/ipc/ipc_channel_posix.cc
+++ b/ipc/ipc_channel_posix.cc
@@ -170,8 +170,8 @@ bool CreateServerUnixDomainSocket(const std::string& pipe_name,
   unlink(pipe_name.c_str());
 
   // Make sure the path we need exists.
-  FilePath path(pipe_name);
-  FilePath dir_path = path.DirName();
+  base::FilePath path(pipe_name);
+  base::FilePath dir_path = path.DirName();
   if (!file_util::CreateDirectory(dir_path)) {
     if (HANDLE_EINTR(close(fd)) < 0)
       PLOG(ERROR) << "close " << pipe_name;
@@ -738,7 +738,7 @@ void Channel::ChannelImpl::ResetToAcceptingConnectionState() {
 // static
 bool Channel::ChannelImpl::IsNamedServerInitialized(
     const std::string& channel_id) {
-  return file_util::PathExists(FilePath(channel_id));
+  return file_util::PathExists(base::FilePath(channel_id));
 }
 
 #if defined(OS_LINUX)