Make GrGpuResources register with GrResourceCache2 after fully constructed.

src/gpu/GrResourceCache2.cpp

Index: src/gpu/GrResourceCache2.cpp
diff --git a/src/gpu/GrResourceCache2.cpp b/src/gpu/GrResourceCache2.cpp
index 0b6944ee856306f8a3983a82b87b5ab823aa91e2..c325efd40d5b11ab0d3fbb19f2b78553c6d107a0 100644
--- a/src/gpu/GrResourceCache2.cpp
+++ b/src/gpu/GrResourceCache2.cpp
@@ -17,11 +17,13 @@ GrResourceCache2::~GrResourceCache2() {
 void GrResourceCache2::insertResource(GrGpuResource* resource) {
     SkASSERT(NULL != resource);
     SkASSERT(!resource->wasDestroyed());
+    SkASSERT(!this->isInCache(resource));
     fResources.addToHead(resource);
     ++fCount;
 }
 
 void GrResourceCache2::removeResource(GrGpuResource* resource) {
+    SkASSERT(this->isInCache(resource));
     fResources.remove(resource);
     --fCount;
 }