Have GrSurfaceProxys and GrGpuResources draw from the same pool of unique ids

include/private/GrSurfaceProxy.h

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrSurfaceProxy_DEFINED
 #define GrSurfaceProxy_DEFINED
 
@@ skipping 23 matching lines @@
     virtual GrTextureProxy* asTextureProxy() { return nullptr; }
     virtual const GrTextureProxy* asTextureProxy() const { return nullptr; }
 
     /**
      * @return the render target proxy associated with the surface proxy, may be NULL.
      */
     virtual GrRenderTargetProxy* asRenderTargetProxy() { return nullptr; }
     virtual const GrRenderTargetProxy* asRenderTargetProxy() const { return nullptr; }
 
 protected:
+    // Deferred version
     GrSurfaceProxy(const GrSurfaceDesc& desc, SkBackingFit fit, SkBudgeted budgeted)
         : fDesc(desc)
         , fFit(fit)
         , fBudgeted(budgeted)
-        , fUniqueID(CreateUniqueID()) {
+        , fUniqueID(GrGpuResource::CreateUniqueID()) {
+    }
+
+    // Wrapped version
+    GrSurfaceProxy(const GrSurfaceDesc& desc, SkBackingFit fit, 
+                   SkBudgeted budgeted, uint32_t uniqueID)
+        : fDesc(desc)
+        , fFit(fit)
+        , fBudgeted(budgeted)
+        , fUniqueID(uniqueID) {
     }
 
     virtual ~GrSurfaceProxy() {}
 
     // For wrapped resources, 'fDesc' will always be filled in from the wrapped resource.
     const GrSurfaceDesc fDesc;
     const SkBackingFit  fFit;      // always exact for wrapped resources
     const SkBudgeted    fBudgeted; // set from the backing resource for wrapped resources
-    const uint32_t      fUniqueID;
+    const uint32_t      fUniqueID; // set from the backing resource for wrapped resources
 
 private:
-    static uint32_t CreateUniqueID();
 
     // See comment in GrGpuResource.h.
     void notifyAllCntsAreZero(CntType) const { delete this; }
     bool notifyRefCountIsZero() const { return true; }
 
     typedef GrIORef<GrSurfaceProxy> INHERITED;
 
     // to access notifyAllCntsAreZero and notifyRefCntIsZero.
     friend class GrIORef<GrSurfaceProxy>;
 };
 
 #endif