Remove run_pie from android/tools now that ICS support is deprecated

tools/android/run_pie/run_pie.c

-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include <dlfcn.h>
-#include <stdio.h>
-#include <string.h>
-#include <sys/prctl.h>
-#include <unistd.h>
-
-// This is a wrapper to run position independent executables on Android ICS,
-// where the linker doesn't support PIE. This requires the PIE binaries to be
-// built with CFLAGS +=-fvisibility=default -fPIE, and LDFLAGS += -rdynamic -pie
-// such that the main() symbol remains exported and can be dlsym-ed.
-
-#define ERR_PREFIX "[PIE Loader] "
-
-typedef int (*main_t)(int, char**);
-
-
-int main(int argc, char** argv) {
-  if (argc < 2) {
-    printf("Usage: %s path_to_pie_executable [args]\n", argv[0]);
-    return -1;
-  }
-
-  // Shift left the argv[]. argv is what /proc/PID/cmdline prints out. In turn
-  // cmdline is what Android "ps" prints out. In turn "ps" is what many scripts
-  // look for to decide which processes to kill / killall.
-  int i;
-  char* next_argv_start = argv[0];
-  for (i = 1; i < argc; ++i) {
-    const size_t argv_len = strlen(argv[i]) + 1;
-    memcpy(argv[i - 1], argv[i], argv_len);
-    next_argv_start += argv_len;
-    argv[i] = next_argv_start;
-  }
-  argv[argc - 1] = NULL;  // The last argv must be a NULL ptr.
-
-  // Set also the proc name accordingly (/proc/PID/comm).
-  prctl(PR_SET_NAME, (long) argv[0]);
-
-  // dlopen should not fail, unless:
-  // - The target binary does not exists:
-  // - The dependent .so libs cannot be loaded.
-  // In both cases, just bail out with an explicit error message.
-  void* handle = dlopen(argv[0], RTLD_NOW);
-  if (handle == NULL) {
-    printf(ERR_PREFIX "dlopen() failed: %s.\n", dlerror());
-    return -1;
-  }
-
-  main_t pie_main = (main_t) dlsym(handle, "main");
-  if (pie_main) {
-    return pie_main(argc - 1, argv);
-  }
-
-  // If we reached this point dlsym failed, very likely because the target
-  // binary has not been compiled with the proper CFLAGS / LDFLAGS.
-  // At this point the most sensible thing to do is running that normally
-  // via exec and hope that the target binary wasn't a PIE.
-  execv(argv[0], argv);
-
-  // exevc is supposed to never return, unless it fails.
-  printf(ERR_PREFIX "Both dlsym() and the execv() fallback failed.\n");
-  perror("execv");
-  return -1;
-}