Move npot resizing out of GrContext and simplify GrContext texture functions.

tests/GLProgramsTest.cpp

Index: tests/GLProgramsTest.cpp
diff --git a/tests/GLProgramsTest.cpp b/tests/GLProgramsTest.cpp
index c3752c48bb7b13be59b6da6e7d5b1d85b5019f94..16d44fd9df1e852cce8cecae8b9e6c2a647f3968 100644
--- a/tests/GLProgramsTest.cpp
+++ b/tests/GLProgramsTest.cpp
@@ -114,14 +114,14 @@ static GrRenderTarget* random_render_target(GrContext* context, SkRandom* random
     builder[0] = texDesc.fOrigin;
     builder.finish();
 
-    SkAutoTUnref<GrTexture> texture(context->findAndRefTexture(texDesc, key, &params));
+    GrTexture* texture = context->findAndRefCachedTexture(key);
     if (!texture) {
-        texture.reset(context->createTexture(&params, texDesc, key, 0, 0));
-        if (!texture) {
-            return NULL;
+        texture = context->createTexture(texDesc);
+        if (texture) {
+            SkAssertResult(context->addResourceToCache(key, texture));            
         }
     }
-    return SkRef(texture->asRenderTarget());
+    return texture ? texture->asRenderTarget() : NULL;
 }
 
 static void set_random_xpf(GrContext* context, const GrDrawTargetCaps& caps,