Factor GrTexture into public GrTexture and private GrTextureImpl.

Committed: http://code.google.com/p/skia/source/detail?r=14680

R=jvanverth@google.com, robertphillips@google.com

Author: bsalomon@google.com

Review URL: https://codereview.chromium.org/275903002

git-svn-id: http://skia.googlecode.com/svn/trunk@14687 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/bench/GrResourceCacheBench.cpp b/bench/GrResourceCacheBench.cpp
index 6767ca1..b2a5d1e 100644
--- a/bench/GrResourceCacheBench.cpp
+++ b/bench/GrResourceCacheBench.cpp
@@ -62,7 +62,7 @@
     }
 
     static GrResourceKey ComputeKey(const GrTextureDesc& desc) {
-        return GrTexture::ComputeScratchKey(desc);
+        return GrTextureImpl::ComputeScratchKey(desc);
     }
 
     int fID;