Not for review - Rebase of crrev.com/62833003

public/platform/WebTeleportCallback.h

 /*
  * Copyright (C) 2014 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 10 matching lines @@
  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  * 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.
  */
 
-#ifndef WebWaitableEvent_h
-#define WebWaitableEvent_h
+#ifndef WebTeleportCallback_h
+#define WebTeleportCallback_h
 
 #include "WebCommon.h"
 
+#include "WebString.h"
+#include "WebVector.h"
+
 namespace blink {
 
-// Provides a thread synchronization that can be used to allow one thread to
-// wait until another thread to finish some work.
-class WebWaitableEvent {
-public:
-    virtual ~WebWaitableEvent() { }
+struct WebTeleportValue {
+    enum ValueType {
+        ValueTypeTransform,
+        ValueTypeOpacity,
+        ValueTypeScrollTop,
+        ValueTypePendingScrollDelta,
+        ValueTypeTimestamp,
+        ValueTypeError
+    };
 
-    // Waits indefinitely for the event to be signaled.
-    virtual void wait() = 0;
+    WebString id;
+    ValueType type;
+    bool initialized;
+    bool modified;
+    int layer_id;
 
-    // Puts the event in the signaled state. Causing any thread blocked on Wait
-    // to be woken up. The event state is reset to non-signaled after
-    // a waiting thread has been released.
-    virtual void signal() = 0;
+    union {
+        double matrix[16];
+        double scalar;
+    } value;
 };
 
-} // namespace blink
+typedef WebVector<WebTeleportValue> WebTeleportValues;
 
-#endif // WebWaitableEvent_h
+class WebTeleportCallback {
+public:
+    virtual ~WebTeleportCallback() { }
+    virtual void Run(const WebTeleportValues&) = 0;
+};
+
+} // blink
+
+#endif // WebTeleportCallback_h