Move a bunch of code in content\renderer to the content namespace.

content/app/content_main_runner.cc

Index: content/app/content_main_runner.cc
===================================================================
--- content/app/content_main_runner.cc	(revision 163007)
+++ content/app/content_main_runner.cc	(working copy)
@@ -95,15 +95,15 @@
 extern int PluginMain(const content::MainFunctionParams&);
 extern int PpapiPluginMain(const content::MainFunctionParams&);
 extern int PpapiBrokerMain(const content::MainFunctionParams&);
-extern int RendererMain(const content::MainFunctionParams&);
 extern int WorkerMain(const content::MainFunctionParams&);
 extern int UtilityMain(const content::MainFunctionParams&);
+namespace content {
+extern int RendererMain(const MainFunctionParams&);
 #if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_ANDROID)
-namespace content {
 extern int ZygoteMain(const MainFunctionParams&,
                       ZygoteForkDelegate* forkdelegate);
+#endif
 }  // namespace content
-#endif
 
 namespace {
 #if defined(OS_WIN)