Move a bunch of child-only code from content/common to content/child

content/common/debug_util.cc

+// Copyright 2013 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 "content/common/debug_util.h"
+
+#if defined(OS_POSIX) && !defined(OS_ANDROID)
+#include <signal.h>  // For SigUSR1Handler below.
+#endif
+
+#include "base/logging.h"
+
+#if defined(OS_POSIX) && !defined(OS_ANDROID)
+static void SigUSR1Handler(int signal) { }
+#endif
+
+namespace content {
+
+void WaitForDebugger(const std::string& label) {
+#if defined(OS_WIN)
+#if defined(GOOGLE_CHROME_BUILD)
+  std::string title = "Google Chrome";
+#else  // CHROMIUM_BUILD
+  std::string title = "Chromium";
+#endif  // CHROMIUM_BUILD
+  title += " ";
+  title += label;  // makes attaching to process easier
+  std::string message = label;
+  message += " starting with pid: ";
+  message += base::IntToString(base::GetCurrentProcId());
+  ::MessageBox(NULL, UTF8ToWide(message).c_str(), UTF8ToWide(title).c_str(),
+               MB_OK | MB_SETFOREGROUND);
+#elif defined(OS_POSIX)
+#if defined(OS_ANDROID)
+  LOG(ERROR) << label << " waiting for GDB.";
+  // Wait 24 hours for a debugger to be attached to the current process.
+  base::debug::WaitForDebugger(24 * 60 * 60, false);
+#else
+  // TODO(playmobil): In the long term, overriding this flag doesn't seem
+  // right, either use our own flag or open a dialog we can use.
+  // This is just to ease debugging in the interim.
+  LOG(ERROR) << label
+             << " ("
+             << getpid()
+             << ") paused waiting for debugger to attach. "
+             << "Send SIGUSR1 to unpause.";
+  // Install a signal handler so that pause can be woken.
+  struct sigaction sa;
+  memset(&sa, 0, sizeof(sa));
+  sa.sa_handler = SigUSR1Handler;
+  sigaction(SIGUSR1, &sa, NULL);
+
+  pause();
+#endif  // defined(OS_ANDROID)
+#endif  // defined(OS_POSIX)
+}
+
+}  // namespace content