Make GrIODB keep pending IO refs on all resources it records into its cmd stream.

src/gpu/GrGpuResourceRef.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrGpuResourceRef.h"
 #include "GrGpuResource.h"
 
@@ skipping 75 matching lines @@
         case kRead_IOType:
             fResource->addPendingRead();
             break;
         case kWrite_IOType:
             fResource->addPendingWrite();
             break;
         case kRW_IOType:
             fResource->addPendingRead();
             fResource->addPendingWrite();
             break;
-
     }
 }
 
 void GrGpuResourceRef::pendingIOComplete() const {
     // This should only be called when the owner's pending executions have ocurred but it is still
     // reffed.
     SkASSERT(fOwnRef);
     SkASSERT(fPendingIO);
     switch (fIOType) {
         case kNone_IOType:
@@ skipping 17 matching lines @@
 void GrGpuResourceRef::removeRef() const {
     // This should only be called once, when the owners last ref goes away and
     // there is a pending execution.
     SkASSERT(fOwnRef);
     SkASSERT(fPendingIO);
     SkASSERT(kNone_IOType != fIOType);
     SkASSERT(fResource);
     fResource->unref();
     fOwnRef = false;
 }