Delete invalidateTreeIfNeeded.

sky/engine/core/html/HTMLCanvasElement.cpp

Index: sky/engine/core/html/HTMLCanvasElement.cpp
diff --git a/sky/engine/core/html/HTMLCanvasElement.cpp b/sky/engine/core/html/HTMLCanvasElement.cpp
index 2ae10267fddb3d26428532573ad1d89f64b1e85f..4831ea5da915f5ac1a77283807fc3143806af773 100644
--- a/sky/engine/core/html/HTMLCanvasElement.cpp
+++ b/sky/engine/core/html/HTMLCanvasElement.cpp
@@ -277,13 +277,6 @@ void HTMLCanvasElement::reset()
     if (m_context && m_context->is3d() && oldSize != size())
         toWebGLRenderingContext(m_context.get())->reshape(width(), height());
 
-    if (RenderObject* renderer = this->renderer()) {
-        if (renderer->isCanvas()) {
-            if (hadImageBuffer)
-                renderer->setShouldDoFullPaintInvalidation(true);
-        }
-    }
-
     HashSet<RawPtr<CanvasObserver> >::iterator end = m_observers.end();
     for (HashSet<RawPtr<CanvasObserver> >::iterator it = m_observers.begin(); it != end; ++it)
         (*it)->canvasResized(this);