Remove memory_watcher tool as well as --memory-profile command line flag.

tools/memory_watcher/scripts/finditem.pl

-#!/usr/bin/perl
-# Copyright (c) 2012 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.
-
-sub process_raw($$) {
-  my $file = shift;
-  my $search = shift;
-
-  my %leaks = ();
-
-  my $save = 0;
-  my $print = 0;
-  my $bytes = 0;
-  my $calls = 0;
-  my $sum_bytes = 0;
-  my $sum_calls = 0;
-
-  open (LOGFILE, "$file") or die("could not open $file");
-  while(<LOGFILE>) {
-    my $line = $_;
-    if ($line =~ m/([0-9]*) bytes, ([0-9]*) allocs/) {
-      $save = "";
-      $print = 0;
-      $bytes = $1;
-      $calls = $2;
-    }
-    elsif ($line =~ m/$search/) {
-      $print = 1;
-    }
-    elsif ($line =~ m/=============/) {
-      $save .= $line;
-      if ($print) {
-        print "$bytes bytes ($calls calls)\n";
-        print $save;
-        $sum_bytes += $bytes;
-        $sum_calls += $calls;
-        $save = "";
-        $print = 0;
-        $calls = 0;
-      }
-    }
-    $save .= $line;
-  }
-  print("TOTAL: $sum_bytes bytes ($sum_calls calls)\n");
-}
-
-
-# ----- Main ------------------------------------------------
-
-# Get the command line argument
-my $filename = shift;
-my $search = shift;
-
-# Process the file.
-process_raw($filename, $search);