Initial import attempt, just to play with. Many things disabled/removed

ui/cc/cc/CCThreadProxy.h

Index: ui/cc/cc/CCThreadProxy.h
diff --git a/ui/cc/cc/CCThreadProxy.h b/ui/cc/cc/CCThreadProxy.h
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index 0000000000000000000000000000000000000000..e10c3dcb085e9d91b0761b482273871f1559acdb
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+++ b/ui/cc/cc/CCThreadProxy.h
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+/*
+ * Copyright (C) 2011 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:
+ * 1.  Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ * 2.  Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS 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 CCThreadProxy_h
+#define CCThreadProxy_h
+
+#include "cc/CCAnimationEvents.h"
+#include "cc/CCCompletionEvent.h"
+#include "cc/CCLayerTreeHostImpl.h"
+#include "cc/CCProxy.h"
+#include "cc/CCScheduler.h"
+#include <wtf/OwnPtr.h>
+
+namespace WebCore {
+
+class CCInputHandler;
+class CCLayerTreeHost;
+class CCScheduler;
+class CCScopedThreadProxy;
+class CCTextureUpdater;
+class CCThread;
+class CCThreadProxyContextRecreationTimer;
+
+class CCThreadProxy : public CCProxy, CCLayerTreeHostImplClient, CCSchedulerClient {
+public:
+    static PassOwnPtr<CCProxy> create(CCLayerTreeHost*);
+
+    virtual ~CCThreadProxy();
+
+    // CCProxy implementation
+    virtual bool compositeAndReadback(void *pixels, const IntRect&) OVERRIDE;
+    virtual void startPageScaleAnimation(const IntSize& targetPosition, bool useAnchor, float scale, double duration) OVERRIDE;
+    virtual void finishAllRendering() OVERRIDE;
+    virtual bool isStarted() const OVERRIDE;
+    virtual bool initializeContext() OVERRIDE;
+    virtual void setSurfaceReady() OVERRIDE;
+    virtual void setVisible(bool) OVERRIDE;
+    virtual bool initializeLayerRenderer() OVERRIDE;
+    virtual bool recreateContext() OVERRIDE;
+    virtual int compositorIdentifier() const OVERRIDE;
+    virtual void implSideRenderingStats(CCRenderingStats&) OVERRIDE;
+    virtual const LayerRendererCapabilities& layerRendererCapabilities() const OVERRIDE;
+    virtual void loseContext() OVERRIDE;
+    virtual void setNeedsAnimate() OVERRIDE;
+    virtual void setNeedsCommit() OVERRIDE;
+    virtual void setNeedsRedraw() OVERRIDE;
+    virtual bool commitRequested() const OVERRIDE;
+    virtual void didAddAnimation() OVERRIDE { }
+    virtual void start() OVERRIDE;
+    virtual void stop() OVERRIDE;
+    virtual size_t maxPartialTextureUpdates() const OVERRIDE;
+    virtual void acquireLayerTextures() OVERRIDE;
+    virtual void setFontAtlas(PassOwnPtr<CCFontAtlas>) OVERRIDE;
+    virtual void forceSerializeOnSwapBuffers() OVERRIDE;
+
+    // CCLayerTreeHostImplClient implementation
+    virtual void didLoseContextOnImplThread() OVERRIDE;
+    virtual void onSwapBuffersCompleteOnImplThread() OVERRIDE;
+    virtual void setNeedsRedrawOnImplThread() OVERRIDE;
+    virtual void setNeedsCommitOnImplThread() OVERRIDE;
+    virtual void postAnimationEventsToMainThreadOnImplThread(PassOwnPtr<CCAnimationEventsVector>, double wallClockTime) OVERRIDE;
+
+    // CCSchedulerClient implementation
+    virtual bool canDraw() OVERRIDE;
+    virtual bool hasMoreResourceUpdates() const OVERRIDE;
+    virtual void scheduledActionBeginFrame() OVERRIDE;
+    virtual CCScheduledActionDrawAndSwapResult scheduledActionDrawAndSwapIfPossible() OVERRIDE;
+    virtual CCScheduledActionDrawAndSwapResult scheduledActionDrawAndSwapForced() OVERRIDE;
+    virtual void scheduledActionUpdateMoreResources() OVERRIDE;
+    virtual void scheduledActionCommit() OVERRIDE;
+    virtual void scheduledActionBeginContextRecreation() OVERRIDE;
+    virtual void scheduledActionAcquireLayerTexturesForMainThread() OVERRIDE;
+
+private:
+    explicit CCThreadProxy(CCLayerTreeHost*);
+    friend class CCThreadProxyContextRecreationTimer;
+
+    // Set on impl thread, read on main thread.
+    struct BeginFrameAndCommitState {
+        BeginFrameAndCommitState()
+            : monotonicFrameBeginTime(0)
+            , updater(0)
+        {
+        }
+
+        double monotonicFrameBeginTime;
+        OwnPtr<CCScrollAndScaleSet> scrollInfo;
+        CCTextureUpdater* updater;
+        bool contentsTexturesWereDeleted;
+        size_t memoryAllocationLimitBytes;
+    };
+    OwnPtr<BeginFrameAndCommitState> m_pendingBeginFrameRequest;
+
+    // Called on main thread
+    void beginFrame();
+    void didCommitAndDrawFrame();
+    void didCompleteSwapBuffers();
+    void setAnimationEvents(PassOwnPtr<CCAnimationEventsVector>, double wallClockTime);
+    void beginContextRecreation();
+    void tryToRecreateContext();
+
+    // Called on impl thread
+    struct ReadbackRequest {
+        CCCompletionEvent completion;
+        bool success;
+        void* pixels;
+        IntRect rect;
+    };
+    void forceBeginFrameOnImplThread(CCCompletionEvent*);
+    void beginFrameCompleteOnImplThread(CCCompletionEvent*);
+    void beginFrameAbortedOnImplThread();
+    void requestReadbackOnImplThread(ReadbackRequest*);
+    void requestStartPageScaleAnimationOnImplThread(IntSize targetPosition, bool useAnchor, float scale, double durationSec);
+    void finishAllRenderingOnImplThread(CCCompletionEvent*);
+    void initializeImplOnImplThread(CCCompletionEvent*);
+    void setSurfaceReadyOnImplThread();
+    void setVisibleOnImplThread(CCCompletionEvent*, bool);
+    void initializeContextOnImplThread(CCGraphicsContext*);
+    void initializeLayerRendererOnImplThread(CCCompletionEvent*, bool* initializeSucceeded, LayerRendererCapabilities*);
+    void layerTreeHostClosedOnImplThread(CCCompletionEvent*);
+    void setFullRootLayerDamageOnImplThread();
+    void acquireLayerTexturesForMainThreadOnImplThread(CCCompletionEvent*);
+    void recreateContextOnImplThread(CCCompletionEvent*, CCGraphicsContext*, bool* recreateSucceeded, LayerRendererCapabilities*);
+    void implSideRenderingStatsOnImplThread(CCCompletionEvent*, CCRenderingStats*);
+    CCScheduledActionDrawAndSwapResult scheduledActionDrawAndSwapInternal(bool forcedDraw);
+    void setFontAtlasOnImplThread(PassOwnPtr<CCFontAtlas>);
+    void forceSerializeOnSwapBuffersOnImplThread(CCCompletionEvent*);
+    void setNeedsForcedCommitOnImplThread();
+
+    // Accessed on main thread only.
+    bool m_animateRequested;
+    bool m_commitRequested;
+    bool m_forcedCommitRequested;
+    bool m_contextLost;
+    OwnPtr<CCThreadProxyContextRecreationTimer> m_contextRecreationTimer;
+    CCLayerTreeHost* m_layerTreeHost;
+    int m_compositorIdentifier;
+    bool m_layerRendererInitialized;
+    LayerRendererCapabilities m_layerRendererCapabilitiesMainThreadCopy;
+    bool m_started;
+    bool m_texturesAcquired;
+    bool m_inCompositeAndReadback;
+
+    OwnPtr<CCLayerTreeHostImpl> m_layerTreeHostImpl;
+
+    OwnPtr<CCInputHandler> m_inputHandlerOnImplThread;
+
+    OwnPtr<CCScheduler> m_schedulerOnImplThread;
+
+    RefPtr<CCScopedThreadProxy> m_mainThreadProxy;
+
+    // Holds on to the context we might use for compositing in between initializeContext()
+    // and initializeLayerRenderer() calls.
+    OwnPtr<CCGraphicsContext> m_contextBeforeInitializationOnImplThread;
+
+    // Set when the main thread is waiting on a scheduledActionBeginFrame to be issued.
+    CCCompletionEvent* m_beginFrameCompletionEventOnImplThread;
+
+    // Set when the main thread is waiting on a readback.
+    ReadbackRequest* m_readbackRequestOnImplThread;
+
+    // Set when the main thread is waiting on a commit to complete.
+    CCCompletionEvent* m_commitCompletionEventOnImplThread;
+
+    // Set when the main thread is waiting on layers to be drawn.
+    CCCompletionEvent* m_textureAcquisitionCompletionEventOnImplThread;
+
+    OwnPtr<CCTextureUpdater> m_currentTextureUpdaterOnImplThread;
+
+    // Set when the next draw should post didCommitAndDrawFrame to the main thread.
+    bool m_nextFrameIsNewlyCommittedFrameOnImplThread;
+};
+
+}
+
+#endif