Fix issue incremental upload can evict textures being drawn

cc/CCLayerTreeHost.h

Index: cc/CCLayerTreeHost.h
diff --git a/cc/CCLayerTreeHost.h b/cc/CCLayerTreeHost.h
index 950a086aefe8f7c6f30170d3155bc7024071523f..4ac9cab083a958273251dbf7e98fa322bbe2d321 100644
--- a/cc/CCLayerTreeHost.h
+++ b/cc/CCLayerTreeHost.h
@@ -169,22 +169,6 @@ public:
 
     CCPrioritizedTextureManager* contentsTextureManager() const;
 
-    // Delete contents textures' backing resources until they use only bytesLimit bytes. This may
-    // be called on the impl thread while the main thread is running.
-    void reduceContentsTexturesMemoryOnImplThread(size_t bytesLimit, CCResourceProvider*);
-    // Returns true if there any evicted backing textures that have not been deleted.
-    bool evictedContentsTexturesBackingsExist() const;
-    // Retrieve the list of all contents textures' backings that have been evicted, to pass to the
-    // main thread to unlink them from their owning textures.
-    void getEvictedContentTexturesBackings(CCPrioritizedTextureManager::BackingVector&);
-    // Unlink the list of contents textures' backings from their owning textures on the main thread
-    // before updating layers.
-    void unlinkEvictedContentTexturesBackings(const CCPrioritizedTextureManager::BackingVector&);
-    // Deletes all evicted backings, unlinking them from their owning textures if needed.
-    // Returns true if this function had to unlink any backings from their owning texture when
-    // destroying them. If this was the case, the impl layer tree may contain invalid resources.
-    bool deleteEvictedContentTexturesBackings();
-
     bool visible() const { return m_visible; }
     void setVisible(bool);