Add WebPrescientNetworking to trigger preconnect from Blink.

Source/core/platform/network/Preconnect.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 11 matching lines @@
  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #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;
+
+    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;
+    platform->preconnect(WebKit::WebURL(url), webMotivation);
 }
 
-void StorageErrorCallback::CallbackTask::performTask(ScriptExecutionContext*)
-{
-    if (!m_callback)
-        return;
-    ExceptionCodeDescription description(m_ec);
-    m_callback->handleEvent(DOMCoreException::create(description).get());
 }
-
-} // namespace WebCore