Declarative resource hints go through mojo IPC to //content

third_party/WebKit/public/platform/Platform.h

 /*
  * Copyright (C) 2012 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 13 matching lines @@
  * 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.
  */
 
 #ifndef Platform_h
 #define Platform_h
 
+#include <memory>
+
 #ifdef WIN32
 #include <windows.h>
 #endif
 
 #include "BlameContext.h"
 #include "UserMetricsAction.h"
 #include "WebAudioDevice.h"
 #include "WebCommon.h"
 #include "WebData.h"
 #include "WebDeviceLightListener.h"
@@ skipping 13 matching lines @@
 
 class GrContext;
 
 namespace v8 {
 class Context;
 template<class T> class Local;
 }
 
 namespace blink {
 
+class PlatformMojoInterface;
 class ServiceRegistry;
 class WebAudioBus;
 class WebBlobRegistry;
 class WebCanvasCaptureHandler;
 class WebClipboard;
 class WebCompositorSupport;
 class WebCookieJar;
 class WebCrypto;
 class WebDatabaseObserver;
 class WebPlatformEventListener;
@@ skipping 442 matching lines @@
     virtual bool allowScriptExtensionForServiceWorker(const WebURL& scriptUrl) { return false; }
 
     // WebCrypto ----------------------------------------------------------
 
     virtual WebCrypto* crypto() { return nullptr; }
 
     // Mojo ---------------------------------------------------------------
 
     virtual ServiceRegistry* serviceRegistry();
 
+    // Resource hints IPC / Mojo ------------------------------------------
+    // TODO(csharrison): Move CrossOriginAttributeValue to public/platform and
+    // take that as an argument instead of credentialsFlag.
+    virtual void preconnect(const KURL&, bool credentialsFlag, int numConnections);
+    virtual void preresolve(const KURL&);
+    virtual void speculativePreresolve(const KURL&);

[kinuko, 2016/06/16 05:39:59]

Do we need to expose these here?

[Charlie Harrison, 2016/06/16 11:00:20]

No, I did it here to make mocking easy for unit tests. I'll revisit this
decision by only exposing the mojo interface.

+
     // Platform events -----------------------------------------------------
     // Device Orientation, Device Motion, Device Light, Battery, Gamepad.
 
     // Request the platform to start listening to the events of the specified
     // type and notify the given listener (if not null) when there is an update.
     virtual void startListening(WebPlatformEventType type, WebPlatformEventListener* listener) { }
 
     // Request the platform to stop listening to the specified event and no
     // longer notify the listener, if any.
     virtual void stopListening(WebPlatformEventType type) { }
@@ skipping 58 matching lines @@
     // Background Sync API------------------------------------------------------------
 
     virtual WebSyncProvider* backgroundSyncProvider() { return nullptr; }
 
     // Experimental Framework ----------------------------------------------
 
     virtual WebTrialTokenValidator* trialTokenValidator() { return nullptr; }
 
 protected:
     Platform();
-    virtual ~Platform() { }
+    virtual ~Platform();
 
     WebThread* m_mainThread;
+    std::unique_ptr<PlatformMojoInterface> m_mojoInterface;

[kinuko, 2016/06/16 05:39:59]

m_mojoInterface's' or m_mojoServices

[Charlie Harrison, 2016/06/16 11:00:20]

m_mojoServices SGTM.

 };
 
 } // namespace blink
 
 #endif