Add cross origin to Blink-driven preconnect

chrome/browser/net/predictor.cc

Index: chrome/browser/net/predictor.cc
diff --git a/chrome/browser/net/predictor.cc b/chrome/browser/net/predictor.cc
index d18979a891f0814bf1462a6c0482b02b68142a7d..c435a8c42e1552334f025c5c16a57ecfcfa8f769 100644
--- a/chrome/browser/net/predictor.cc
+++ b/chrome/browser/net/predictor.cc
@@ -87,6 +87,9 @@ const int Predictor::kMaxSpeculativeResolveQueueDelayMs =
     (kExpectedResolutionTimeMs * Predictor::kTypicalSpeculativeGroupSize) /
     Predictor::kMaxSpeculativeParallelResolves;
 
+// The default value of the credentials flag when preconnecting.
+static bool kAllowCredentialsOnPreconnectByDefault = true;
+
 static int g_max_queueing_delay_ms =
     Predictor::kMaxSpeculativeResolveQueueDelayMs;
 static size_t g_max_parallel_resolves =
@@ -265,8 +268,9 @@ void Predictor::AnticipateOmniboxUrl(const GURL& url, bool preconnectable) {
           return;  // We've done a preconnect recently.
         last_omnibox_preconnect_ = now;
         const int kConnectionsNeeded = 1;
-        PreconnectUrl(
-            CanonicalizeUrl(url), GURL(), motivation, kConnectionsNeeded);
+        PreconnectUrl(CanonicalizeUrl(url), GURL(), motivation,
+                      kAllowCredentialsOnPreconnectByDefault,
+                      kConnectionsNeeded);
         return;  // Skip pre-resolution, since we'll open a connection.
       }
     } else {
@@ -305,8 +309,8 @@ void Predictor::PreconnectUrlAndSubresources(const GURL& url,
 
   UrlInfo::ResolutionMotivation motivation(UrlInfo::EARLY_LOAD_MOTIVATED);
   const int kConnectionsNeeded = 1;
-  PreconnectUrl(CanonicalizeUrl(url), first_party_for_cookies,
-                motivation, kConnectionsNeeded);
+  PreconnectUrl(CanonicalizeUrl(url), first_party_for_cookies, motivation,
+                kConnectionsNeeded, kAllowCredentialsOnPreconnectByDefault);
   PredictFrameSubresources(url.GetWithEmptyPath(), first_party_for_cookies);
 }
 
@@ -840,19 +844,20 @@ void Predictor::SaveDnsPrefetchStateForNextStartupAndTrim(
 void Predictor::PreconnectUrl(const GURL& url,
                               const GURL& first_party_for_cookies,
                               UrlInfo::ResolutionMotivation motivation,
+                              bool allow_credentials,
                               int count) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI) ||
          BrowserThread::CurrentlyOn(BrowserThread::IO));
 
   if (BrowserThread::CurrentlyOn(BrowserThread::IO)) {
-    PreconnectUrlOnIOThread(url, first_party_for_cookies, motivation, count);
+    PreconnectUrlOnIOThread(url, first_party_for_cookies, motivation,
+                            allow_credentials, count);
   } else {
     BrowserThread::PostTask(
-        BrowserThread::IO,
-        FROM_HERE,
-        base::Bind(&Predictor::PreconnectUrlOnIOThread,
-                   base::Unretained(this), url, first_party_for_cookies,
-                   motivation, count));
+        BrowserThread::IO, FROM_HERE,
+        base::Bind(&Predictor::PreconnectUrlOnIOThread, base::Unretained(this),
+                   url, first_party_for_cookies, motivation, allow_credentials,
+                   count));
   }
 }
 
@@ -860,6 +865,7 @@ void Predictor::PreconnectUrlOnIOThread(
     const GURL& original_url,
     const GURL& first_party_for_cookies,
     UrlInfo::ResolutionMotivation motivation,
+    bool allow_credentials,
     int count) {
   // Skip the HSTS redirect.
   GURL url = GetHSTSRedirectOnIOThread(original_url);
@@ -869,11 +875,8 @@ void Predictor::PreconnectUrlOnIOThread(
         url, first_party_for_cookies, motivation, count);
   }
 
-  PreconnectOnIOThread(url,
-                       first_party_for_cookies,
-                       motivation,
-                       count,
-                       url_request_context_getter_.get());
+  PreconnectOnIOThread(url, first_party_for_cookies, motivation, count,
+                       url_request_context_getter_.get(), allow_credentials);
 }
 
 void Predictor::PredictFrameSubresources(const GURL& url,
@@ -941,7 +944,8 @@ void Predictor::PrepareFrameSubresources(const GURL& original_url,
     // provide a more carefully estimated preconnection count.
     if (preconnect_enabled_) {
       PreconnectUrlOnIOThread(url, first_party_for_cookies,
-                              UrlInfo::SELF_REFERAL_MOTIVATED, 2);
+                              UrlInfo::SELF_REFERAL_MOTIVATED,
+                              kAllowCredentialsOnPreconnectByDefault, 2);
     }
     return;
   }
@@ -966,7 +970,8 @@ void Predictor::PrepareFrameSubresources(const GURL& original_url,
       if (url.host() == future_url->first.host())
         ++count;
       PreconnectUrlOnIOThread(future_url->first, first_party_for_cookies,
-                              motivation, count);
+                              motivation,
+                              kAllowCredentialsOnPreconnectByDefault, count);
     } else if (connection_expectation > kDNSPreresolutionWorthyExpectedValue) {
       evalution = PRERESOLUTION;
       future_url->second.preresolution_increment();