Revert "Reduce dependence on GrSurface's origin field"

This reverts commit 467022b1861033d968195687da15270c208279ff.

Reason for revert: GrAHardwareBufferImageGenerator.cpp

Original change's description:
> Reduce dependence on GrSurface's origin field
> 
> Unfortunately, GrGPU and its ilk are still using the GrSurface's origin a lot. I will clean that up in a second CL.
> 
> Change-Id: Iba729440ce8ea8d24bb7f4e5de55ed576a0f176d
> Reviewed-on: https://skia-review.googlesource.com/24700
> Commit-Queue: Robert Phillips <robertphillips@google.com>
> Reviewed-by: Brian Salomon <bsalomon@google.com>

TBR=bsalomon@google.com,robertphillips@google.com

Change-Id: I1b3f5c3b82d250ac164beb1d5c83abb6c3c6ab3b
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/25620
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
diff --git a/src/gpu/GrTextureMaker.cpp b/src/gpu/GrTextureMaker.cpp
index e8ef215..44212fe 100644
--- a/src/gpu/GrTextureMaker.cpp
+++ b/src/gpu/GrTextureMaker.cpp
@@ -41,12 +41,10 @@
         }
     }
 
-    GrSurfaceOrigin origOrigin = original->origin();
     GrUniqueKey copyKey;
     this->makeCopyKey(copyParams, &copyKey, dstColorSpace);
     if (copyKey.isValid()) {
-        sk_sp<GrTextureProxy> result(fContext->resourceProvider()->findProxyByUniqueKey(
-                                                                            copyKey, origOrigin));
+        sk_sp<GrTextureProxy> result(fContext->resourceProvider()->findProxyByUniqueKey(copyKey));
         if (result) {
             return result;
         }
@@ -64,7 +62,6 @@
     }
 
     if (copyKey.isValid()) {
-        SkASSERT(result->origin() == origOrigin);
         fContext->resourceProvider()->assignUniqueKeyToProxy(copyKey, result.get());
         this->didCacheCopy(copyKey);
     }