Use GrResourceCache2 to service content key lookups

src/gpu/GrTexture.cpp

Index: src/gpu/GrTexture.cpp
diff --git a/src/gpu/GrTexture.cpp b/src/gpu/GrTexture.cpp
index 21395409d64bb7b818ff520b8a0abf2bb0725008..72e82252dceccc0de582cb0dc8a0983a1074575a 100644
--- a/src/gpu/GrTexture.cpp
+++ b/src/gpu/GrTexture.cpp
@@ -121,7 +121,10 @@ GrSurfaceOrigin resolve_origin(const GrSurfaceDesc& desc) {
 GrTexture::GrTexture(GrGpu* gpu, bool isWrapped, const GrSurfaceDesc& desc)
     : INHERITED(gpu, isWrapped, desc)
     , fMipMapsStatus(kNotAllocated_MipMapsStatus) {
-    this->setScratchKey(GrTexturePriv::ComputeScratchKey(desc));
+
+    if (!isWrapped) {
+        this->setScratchKey(GrTexturePriv::ComputeScratchKey(desc));
+    }
     // only make sense if alloc size is pow2
     fShiftFixedX = 31 - SkCLZ(fDesc.fWidth);
     fShiftFixedY = 31 - SkCLZ(fDesc.fHeight);