Created a new process type called the service process to host background task...

chrome/app/chrome_dll_main.cc

Index: chrome/app/chrome_dll_main.cc
===================================================================
--- chrome/app/chrome_dll_main.cc	(revision 46945)
+++ chrome/app/chrome_dll_main.cc	(working copy)
@@ -103,6 +103,7 @@
 #if defined(_WIN64)
 extern int NaClBrokerMain(const MainFunctionParams&);
 #endif
+extern int ServiceProcessMain(const MainFunctionParams&);
 
 #if defined(OS_WIN)
 // TODO(erikkay): isn't this already defined somewhere?
@@ -263,7 +264,8 @@
     score = kPluginScore;
   } else if (process_type == switches::kUtilityProcess ||
              process_type == switches::kWorkerProcess ||
-             process_type == switches::kGpuProcess) {
+             process_type == switches::kGpuProcess ||
+             process_type == switches::kServiceProcess) {
     score = kMiscScore;
   } else if (process_type == switches::kProfileImportProcess) {
     NOTIMPLEMENTED();
@@ -367,6 +369,14 @@
       process_type == switches::kUtilityProcess;
 }
 
+// Returns true if this process is a child of the browser process.
+bool SubprocessIsBrowserChild(const std::string& process_type) {
+  if (process_type.empty() || process_type == switches::kServiceProcess) {
+    return false;
+  }
+  return true;
+}
+
 #if defined(OS_MACOSX)
 // Update the name shown in Activity Monitor so users are less likely to ask
 // why Chrome has so many processes.
@@ -513,7 +523,7 @@
   base::ProcessId browser_pid;
   if (process_type.empty()) {
     browser_pid = base::GetCurrentProcId();
-  } else {
+  } else if (SubprocessIsBrowserChild(process_type)) {
 #if defined(OS_WIN)
     std::wstring channel_name =
       parsed_command_line.GetSwitchValue(switches::kProcessChannelID);
@@ -780,6 +790,8 @@
 #else
     NOTIMPLEMENTED();
 #endif
+  } else if (process_type == switches::kServiceProcess) {
+    rv = ServiceProcessMain(main_params);
   } else if (process_type.empty()) {
 #if defined(OS_LINUX)
     const char* sandbox_binary = NULL;