Make textures register with GrResourceCache2 as scratch.

src/gpu/GrResourceCache2.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 "GrResourceCache2.h"
 #include "GrGpuResource.h"
 
 GrResourceCache2::~GrResourceCache2() {
     this->releaseAll();
 }
 
 void GrResourceCache2::insertResource(GrGpuResource* resource) {
     SkASSERT(NULL != resource);
     SkASSERT(!resource->wasDestroyed());
     SkASSERT(!this->isInCache(resource));
     fResources.addToHead(resource);
     ++fCount;
+    if (!resource->getScratchKey().isNullScratch()) {
+        fScratchMap.insert(resource->getScratchKey(), resource);
+    }
 }
 
 void GrResourceCache2::removeResource(GrGpuResource* resource) {
     SkASSERT(this->isInCache(resource));
-    fResources.remove(resource);
+    fResources.remove(resource);    
+    if (!resource->getScratchKey().isNullScratch()) {
+        fScratchMap.remove(resource->getScratchKey(), resource);
+    }
     --fCount;
 }
 
 void GrResourceCache2::abandonAll() {
     while (GrGpuResource* head = fResources.head()) {
         SkASSERT(!head->wasDestroyed());
         head->abandon();
         // abandon should have already removed this from the list.
         SkASSERT(head != fResources.head());
     }
+    SkASSERT(!fScratchMap.count());
     SkASSERT(!fCount);
 }
 
 void GrResourceCache2::releaseAll() {
     while (GrGpuResource* head = fResources.head()) {
         SkASSERT(!head->wasDestroyed());
         head->release();
         // release should have already removed this from the list.
         SkASSERT(head != fResources.head());
     }
+    SkASSERT(!fScratchMap.count());
     SkASSERT(!fCount);
 }