Removed old resource locking system

https://codereview.appspot.com/6488098/



git-svn-id: http://skia.googlecode.com/svn/trunk@5453 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/GrGpu.cpp b/src/gpu/GrGpu.cpp
index fae9d99..514d176 100644
--- a/src/gpu/GrGpu.cpp
+++ b/src/gpu/GrGpu.cpp
@@ -144,9 +144,9 @@
 bool GrGpu::attachStencilBufferToRenderTarget(GrRenderTarget* rt) {
     GrAssert(NULL == rt->getStencilBuffer());
     GrStencilBuffer* sb =
-        this->getContext()->findAndLockStencilBuffer(rt->width(),
-                                                     rt->height(),
-                                                     rt->numSamples());
+        this->getContext()->findStencilBuffer(rt->width(),
+                                              rt->height(),
+                                              rt->numSamples());
     if (NULL != sb) {
         rt->setStencilBuffer(sb);
         bool attached = this->attachStencilBufferToRenderTarget(sb, rt);