Extract simpler classes for observing context lifecycle and observe Page lifecycle inNavigatorVibra…

Source/core/dom/SimpleLifecycleContext.h

Index: Source/core/dom/SimpleLifecycleContext.h
diff --git a/Source/core/html/canvas/WebGLContextObject.h b/Source/core/dom/SimpleLifecycleContext.h
similarity index 59%
copy from Source/core/html/canvas/WebGLContextObject.h
copy to Source/core/dom/SimpleLifecycleContext.h
index 1e4d29657542e6edad0615290fffeb2f6e308a98..6557ec746f93264cfffefd7388e8a3ea7965ff47 100644
--- a/Source/core/html/canvas/WebGLContextObject.h
+++ b/Source/core/dom/SimpleLifecycleContext.h
@@ -1,5 +1,6 @@
+
 /*
- * Copyright (C) 2011 Apple Inc. All rights reserved.
+ * 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
@@ -21,47 +22,44 @@
  * 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 WebGLContextObject_h
-#define WebGLContextObject_h
+#ifndef SimpleLifecycleContext_h
+#define SimpleLifecycleContext_h
 
-#include "core/html/canvas/WebGLObject.h"
+#include "core/dom/SimpleLifecycleObserver.h"
+#include "wtf/HashSet.h"
+#include "wtf/OwnPtr.h"
+#include "wtf/PassOwnPtr.h"
 
 namespace WebCore {
 
-class GraphicsContext3D;
-class WebGLRenderingContext;
+class SimpleLifecycleNotifier;
+class SimpleLifecycleObserver;
 
-// WebGLContextObject the base class for objects that are owned by a specific
-// WebGLRenderingContext.
-class WebGLContextObject : public WebGLObject {
+class SimpleLifecycleContext {
 public:
-    virtual ~WebGLContextObject();
+    SimpleLifecycleContext();
+    virtual ~SimpleLifecycleContext();
 
-    WebGLRenderingContext* context() const { return m_context; }
+    virtual bool isContextThread() const { return true; }
 
-    virtual bool validate(const WebGLContextGroup*, const WebGLRenderingContext* context) const
-    {
-        return context == m_context;
-    }
+    // Called from the constructor of observers.
+    void wasObservedBy(SimpleLifecycleObserver*, SimpleLifecycleObserver::Type);
 
-    void detachContext();
+    // Called from the destructor of observers.
+    void wasUnobservedBy(SimpleLifecycleObserver*, SimpleLifecycleObserver::Type);
 
 protected:
-    WebGLContextObject(WebGLRenderingContext*);
-
-    virtual bool hasGroupOrContext() const
-    {
-        return m_context;
-    }
-
-    virtual GraphicsContext3D* getAGraphicsContext3D() const;
+    SimpleLifecycleNotifier* lifecycleNotifier();
 
 private:
-    WebGLRenderingContext* m_context;
+    virtual PassOwnPtr<SimpleLifecycleNotifier> createLifecycleNotifier();
+
+    OwnPtr<SimpleLifecycleNotifier> m_lifecycleNotifier;
 };
 
 } // namespace WebCore
 
-#endif // WebGLContextObject_h
+#endif // SimpleLifecycleContext_h