Move safe_strerror to posix directory and the base namespace

tools/android/forwarder2/command.cc

Index: tools/android/forwarder2/command.cc
diff --git a/tools/android/forwarder2/command.cc b/tools/android/forwarder2/command.cc
index 9b0aa24cfb602db60637fe54e2db55984788b0f4..9aeee033af6192e4123ff341ed37c1cb3918025d 100644
--- a/tools/android/forwarder2/command.cc
+++ b/tools/android/forwarder2/command.cc
@@ -10,7 +10,7 @@
 #include <string.h>
 
 #include "base/logging.h"
-#include "base/safe_strerror_posix.h"
+#include "base/posix/safe_strerror.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_piece.h"
 #include "tools/android/forwarder2/socket.h"
@@ -50,7 +50,7 @@ bool ReadCommand(Socket* socket,
   int bytes_read = socket->ReadNumBytes(command_buffer, kCommandStringSize);
   if (bytes_read != kCommandStringSize) {
     if (bytes_read < 0)
-      LOG(ERROR) << "Read() error: " << safe_strerror(errno);
+      LOG(ERROR) << "Read() error: " << base::safe_strerror(errno);
     else if (!bytes_read)
       LOG(ERROR) << "Read() error, endpoint was unexpectedly closed.";
     else