Avoid using/setting cookies when fetching sdch dictionary

SDCH is used to fetch a dictionary for decompression,
and is generally not protected (and generally has no
PII).  It specifically does not use SSL in handling
compressed content, and so other than plausibly gathering
stats, there is no reason to use, or save cookies
during a dicitonary fetch.

r=rtenneti
bug=118952

Review URL: http://codereview.chromium.org/10271011

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@134576 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/net/sdch_dictionary_fetcher.cc

@@ -9,6 +9,7 @@
 #include "base/message_loop.h"
 #include "chrome/browser/profiles/profile.h"
 #include "content/public/common/url_fetcher.h"
+#include "net/base/load_flags.h"
 #include "net/url_request/url_request_context_getter.h"
 #include "net/url_request/url_request_status.h"
 
@@ -69,6 +70,8 @@ void SdchDictionaryFetcher::StartFetching() {
       fetch_queue_.front(), content::URLFetcher::GET, this));
   fetch_queue_.pop();
   current_fetch_->SetRequestContext(context_.get());
+  current_fetch_->SetLoadFlags(net::LOAD_DO_NOT_SEND_COOKIES |
+                               net::LOAD_DO_NOT_SAVE_COOKIES);
   current_fetch_->Start();
 }