Add WebPrescientNetworking to trigger preconnect from Blink.

Source/core/platform/network/Preconnect.cpp

Index: Source/core/platform/network/Preconnect.cpp
diff --git a/Source/modules/quota/StorageErrorCallback.cpp b/Source/core/platform/network/Preconnect.cpp
similarity index 62%
copy from Source/modules/quota/StorageErrorCallback.cpp
copy to Source/core/platform/network/Preconnect.cpp
index 3ecf3da927febef3af57369efcd051cfa9e6bdc2..b15f87835ba3194f01033e545adf6a3716bcd1ed 100644
--- a/Source/modules/quota/StorageErrorCallback.cpp
+++ b/Source/core/platform/network/Preconnect.cpp
@@ -29,26 +29,39 @@
  */
 
 #include "config.h"
+#include "core/platform/network/Preconnect.h"
 
-#include "modules/quota/StorageErrorCallback.h"
-
-#include "ExceptionCodeDescription.h"
-#include "core/dom/DOMCoreException.h"
+#include <public/Platform.h>
+#include <public/WebURL.h>
+#include <public/WebPrerenderingSupport.h>
 
 namespace WebCore {
 
-StorageErrorCallback::CallbackTask::CallbackTask(PassRefPtr<StorageErrorCallback> callback, ExceptionCode ec)
-    : m_callback(callback)
-    , m_ec(ec)
+void preconnect(const KURL& url, PreconnectMotivation motivation)
 {
-}
+    WebKit::WebPreconnectMotivation webMotivation;
+    switch (motivation) {
+    case PreconnectMotivationLinkMouseDown:

[tkent, 2013/05/09 02:33:55]

For such 1:1 mapping, we usually just do static_cast<>(), and add tests to
Source/WebKit/chromium/src/AssertMatchingEnums.cpp.

[kouhei (in TOK), 2013/05/09 03:19:29]

Done.

+        webMotivation = WebKit::WebPreconnectMotivationLinkMouseDown;
+        break;
 
-void StorageErrorCallback::CallbackTask::performTask(ScriptExecutionContext*)
-{
-    if (!m_callback)
+    case PreconnectMotivationLinkMouseOver:
+        webMotivation = WebKit::WebPreconnectMotivationLinkMouseOver;
+        break;
+
+    case PreconnectMotivationLinkTapUnconfirmed:
+        webMotivation = WebKit::WebPreconnectMotivationLinkTapUnconfirmed;
+        break;
+
+    case PreconnectMotivationLinkTapDown:
+        webMotivation = WebKit::WebPreconnectMotivationLinkTapDown;
+        break;
+    }
+
+    WebKit::WebPrerenderingSupport* platform = WebKit::WebPrerenderingSupport::current();
+    if (!platform)
         return;
-    ExceptionCodeDescription description(m_ec);
-    m_callback->handleEvent(DOMCoreException::create(description).get());
+    platform->preconnect(WebKit::WebURL(url), webMotivation);
 }
 
-} // namespace WebCore
+}