Enforce calling of inherited onRelease & onAbandon mthds in GrResource-derived classes

http://codereview.appspot.com/6499077/



git-svn-id: http://skia.googlecode.com/svn/trunk@5405 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/GrRenderTarget.cpp b/src/gpu/GrRenderTarget.cpp
index 6235808..7619664 100644
--- a/src/gpu/GrRenderTarget.cpp
+++ b/src/gpu/GrRenderTarget.cpp
@@ -112,8 +112,12 @@
 
 void GrRenderTarget::onRelease() {
     this->setStencilBuffer(NULL);
+
+    INHERITED::onRelease();
 }
 
 void GrRenderTarget::onAbandon() {
     this->setStencilBuffer(NULL);
+
+    INHERITED::onAbandon();
 }