Enable cookies per default in net. Add an API to disable them by default, and do that in Chrome

chrome/app/chrome_main_delegate.cc

Index: chrome/app/chrome_main_delegate.cc
diff --git a/chrome/app/chrome_main_delegate.cc b/chrome/app/chrome_main_delegate.cc
index f689512dbc8ada5a69d8381b65452cfb01586775..d9e5b747126288dc3965afc33056b7dde65fe16e 100644
--- a/chrome/app/chrome_main_delegate.cc
+++ b/chrome/app/chrome_main_delegate.cc
@@ -34,6 +34,7 @@
 #include "content/public/common/content_client.h"
 #include "content/public/common/content_paths.h"
 #include "content/public/common/content_switches.h"
+#include "net/url_request/url_request.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/base/ui_base_switches.h"
 
@@ -394,6 +395,10 @@ struct MainFunction {
 }  // namespace
 
 ChromeMainDelegate::ChromeMainDelegate() {
+  // Chrome disallows cookies per default. All code paths that need to use

[wtc, 2012/03/28 17:51:05]

Nit: per default => by default

[jochen (gone - plz use gerrit), 2012/03/29 18:33:24]

Done.

+  // cookies need to go through one of chrome's URLRequestContexts which have
+  // a ChromeNetworkDelegate attached that selectively allows cookies again.
+  net::URLRequest::SetDefaultCookiePolicyToBlock();

[jam, 2012/03/27 19:17:35]

why do this in chrome/app instead of chrome/browser? the former is for
chrome.exe while the latter is chrome.dll. and since they'll have different
copies of statics on windows, i think you'll need this in browser

[jochen (gone - plz use gerrit), 2012/03/29 18:33:24]

Done.

 }
 
 ChromeMainDelegate::~ChromeMainDelegate() {