Replaced TextureCacheEntry with GrTexture* and a back pointer to GrResourceEntry (in GrTexture)

http://codereview.appspot.com/6460089/



git-svn-id: http://skia.googlecode.com/svn/trunk@5122 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/gl/GrGpuGL.cpp b/src/gpu/gl/GrGpuGL.cpp
index c13bade..8089d10 100644
--- a/src/gpu/gl/GrGpuGL.cpp
+++ b/src/gpu/gl/GrGpuGL.cpp
@@ -1143,7 +1143,7 @@
                                                  int width, int height) {
 
     // All internally created RTs are also textures. We don't create
-    // SBs for a client's standalone RT (that is RT that isnt also a texture).
+    // SBs for a client's standalone RT (that is a RT that isn't also a texture).
     GrAssert(rt->asTexture());
     GrAssert(width >= rt->width());
     GrAssert(height >= rt->height());