Have content/ create and destroy its own threads.

chrome/browser/chrome_browser_parts_gtk.cc

Index: chrome/browser/chrome_browser_parts_gtk.cc
diff --git a/chrome/browser/chrome_browser_parts_gtk.cc b/chrome/browser/chrome_browser_parts_gtk.cc
index 3d1a5aaeab8e2ed80dfd093259c9efedbc532a83..b0c738bbdee110309e8524f3e99c260f9f3f8625 100644
--- a/chrome/browser/chrome_browser_parts_gtk.cc
+++ b/chrome/browser/chrome_browser_parts_gtk.cc
@@ -14,6 +14,8 @@
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/gtk_util.h"
 
+using content::BrowserThread;
+
 ChromeBrowserPartsGtk::ChromeBrowserPartsGtk()
     : content::BrowserMainParts() {
 }
@@ -25,16 +27,20 @@ void ChromeBrowserPartsGtk::PreEarlyInitialization() {
 void ChromeBrowserPartsGtk::PostEarlyInitialization() {
 }
 
-void ChromeBrowserPartsGtk::ToolkitInitialized() {
+void ChromeBrowserPartsGtk::PreMainMessageLoopStart() {
 }
 
-void ChromeBrowserPartsGtk::PreMainMessageLoopStart() {
+void ChromeBrowserPartsGtk::ToolkitInitialized() {
 }
 
 void ChromeBrowserPartsGtk::PostMainMessageLoopStart() {
 }
 
-void ChromeBrowserPartsGtk::PreMainMessageLoopRun() {
+content::IOThreadDelegate* ChromeBrowserPartsGtk::PreMainMessageLoopRun() {
+  return NULL;
+}
+
+void ChromeBrowserPartsGtk::PreMainMessageLoopRunThreadsCreated() {
 }
 
 bool ChromeBrowserPartsGtk::MainMessageLoopRun(int* result_code) {
@@ -44,6 +50,15 @@ bool ChromeBrowserPartsGtk::MainMessageLoopRun(int* result_code) {
 void ChromeBrowserPartsGtk::PostMainMessageLoopRun() {
 }
 
+void ChromeBrowserPartsGtk::PreStopThread(BrowserThread::ID) {
+}
+
+void ChromeBrowserPartsGtk::PostStopThread(BrowserThread::ID) {
+}
+
+void ChromeBrowserPartsGtk::FinalCleanup() {
+}
+
 void ChromeBrowserPartsGtk::DetectRunningAsRoot() {
   if (geteuid() == 0) {
     const CommandLine& command_line = *CommandLine::ForCurrentProcess();