Mac 10.6 build fix: got rid of now-unecessary GrTextureStripAtlas tex cache id component. Unreviewed.

git-svn-id: http://skia.googlecode.com/svn/trunk@5071 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/effects/GrTextureStripAtlas.cpp b/src/gpu/effects/GrTextureStripAtlas.cpp
index 09c67bd..1a8a93b 100644
--- a/src/gpu/effects/GrTextureStripAtlas.cpp
+++ b/src/gpu/effects/GrTextureStripAtlas.cpp
@@ -59,7 +59,7 @@
 }
 
 GrTextureStripAtlas::GrTextureStripAtlas(GrTextureStripAtlas::Desc desc) 
-    : fCacheID(kCacheDomain + sk_atomic_inc(&gCacheCount))
+    : fCacheID(sk_atomic_inc(&gCacheCount))
     , fLockedRows(0)
     , fDesc(desc)
     , fNumRows(desc.fHeight / desc.fRowHeight)