Get rid of <iostream> include in stack_trace_posix (forces a static initializer)

base/debug/stack_trace_posix.cc

 // Copyright (c) 2011 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 "base/debug/stack_trace.h"
 
 #include <errno.h>
 #include <execinfo.h>
 #include <fcntl.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <sys/param.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <unistd.h>
 
 #include <string>
 #include <vector>
 
 #if defined(__GLIBCXX__)
 #include <cxxabi.h>
 #endif
 
 #if defined(OS_MACOSX)
 #include <AvailabilityMacros.h>
 #endif
 
-#include <iostream>
-
 #include "base/basictypes.h"
 #include "base/eintr_wrapper.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/safe_strerror_posix.h"
 #include "base/string_piece.h"
 #include "base/stringprintf.h"
 
 #if defined(USE_SYMBOLIZE)
 #include "base/third_party/symbolize/symbolize.h"
@@ skipping 123 matching lines @@
 
 void StackTrace::PrintBacktrace() const {
 #if defined(OS_MACOSX) && MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5
   if (backtrace_symbols_fd == NULL)
     return;
 #endif
   fflush(stderr);
   std::vector<std::string> trace_strings;
   GetBacktraceStrings(trace_, count_, &trace_strings, NULL);
   for (size_t i = 0; i < trace_strings.size(); ++i) {
-    std::cerr << "\t" << trace_strings[i] << "\n";
+    fprintf(stderr, "\t%s\n", trace_strings[i].c_str());
   }
 }
 
 void StackTrace::OutputToStream(std::ostream* os) const {
 #if defined(OS_MACOSX) && MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5
   if (backtrace_symbols == NULL)
     return;
 #endif
   std::vector<std::string> trace_strings;
   std::string error_message;
   if (GetBacktraceStrings(trace_, count_, &trace_strings, &error_message)) {
     (*os) << "Backtrace:\n";
   } else {
     if (!error_message.empty())
       error_message = " (" + error_message + ")";
     (*os) << "Unable to get symbols for backtrace" << error_message << ". "
           << "Dumping raw addresses in trace:\n";
   }
 
   for (size_t i = 0; i < trace_strings.size(); ++i) {
     (*os) << "\t" << trace_strings[i] << "\n";
   }
 }
 
 }  // namespace debug
 }  // namespace base