Give plug-in processes an executable heap and disable PIE/ASLR for Native

content/browser/ppapi_broker_process_host.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 "content/browser/ppapi_broker_process_host.h"
 
 #include "base/command_line.h"
 #include "base/file_path.h"
 #include "base/process_util.h"
 #include "base/utf_string_conversions.h"
@@ skipping 18 matching lines @@
   set_version(UTF8ToUTF16(info.version));
 
   if (!CreateChannel())
     return false;
 
   const CommandLine& browser_command_line = *CommandLine::ForCurrentProcess();
   // Use the same launcher mechanism as ppapi plugins.
   CommandLine::StringType plugin_launcher =
       browser_command_line.GetSwitchValueNative(switches::kPpapiPluginLauncher);
 
-  FilePath exe_path = ChildProcessHost::GetChildPath(plugin_launcher.empty());
+#if defined(OS_LINUX)
+  int flags = plugin_launcher.empty() ? ChildProcessHost::CHILD_ALLOW_SELF :
+                                        ChildProcessHost::CHILD_NORMAL;
+#else
+  int flags = ChildProcessHost::CHILD_NORMAL;
+#endif
+
+  FilePath exe_path = ChildProcessHost::GetChildPath(flags);
   if (exe_path.empty())
     return false;
 
   CommandLine* cmd_line = new CommandLine(exe_path);
   cmd_line->AppendSwitchASCII(switches::kProcessType,
                               switches::kPpapiBrokerProcess);
   cmd_line->AppendSwitchASCII(switches::kProcessChannelID, channel_id());
 
   if (!plugin_launcher.empty())
     cmd_line->PrependWrapper(plugin_launcher);
@@ skipping 118 matching lines @@
   ::DuplicateHandle(::GetCurrentProcess(), broker_process,
                     renderer_process, &renderers_broker_handle,
                     0, FALSE, DUPLICATE_SAME_ACCESS);
 #elif defined(OS_POSIX)
   // Don't need to duplicate anything on POSIX since it's just a PID.
   base::ProcessHandle renderers_broker_handle = broker_process;
 #endif
 
   client->OnChannelOpened(renderers_broker_handle, channel_handle);
 }