Remove createUncachedTexture function, attempt to recycle scratch in createTexture.

tests/ReadWriteAlphaTest.cpp

Index: tests/ReadWriteAlphaTest.cpp
diff --git a/tests/ReadWriteAlphaTest.cpp b/tests/ReadWriteAlphaTest.cpp
index 966bc7f901f120dd2ea756dc97663154ec44a09a..3f9ff1b480ee5a923ec616375f769de67b58ec2e 100644
--- a/tests/ReadWriteAlphaTest.cpp
+++ b/tests/ReadWriteAlphaTest.cpp
@@ -41,7 +41,7 @@ DEF_GPUTEST(ReadWriteAlpha, reporter, factory) {
         desc.fHeight    = Y_SIZE;
 
         // We are initializing the texture with zeros here
-        GrTexture* texture = context->createUncachedTexture(desc, textureData, 0);
+        GrTexture* texture = context->createTexture(desc, false, textureData, 0);
         if (!texture) {
             return;
         }