Revert "Revert "Plumb GrBackendTexture throughout skia.""

This reverts commit 7fa5c31c2c9af834bee66d5fcf476e250076c8d6.

Reason for revert: Relanding this change now that other fixes have landed.

Original change's description:
> Revert "Plumb GrBackendTexture throughout skia."
> 
> This reverts commit 7da62b9059f3c1d31624a0e4da96ee5f908f9c12.
> 
> Reason for revert: fix android roll
> 
> Original change's description:
> > Plumb GrBackendTexture throughout skia.
> > 
> > Bug: skia:
> > Change-Id: I1bae6768ee7229818a83ba608035a1f7867e6875
> > Reviewed-on: https://skia-review.googlesource.com/13645
> > Commit-Queue: Greg Daniel <egdaniel@google.com>
> > Reviewed-by: Robert Phillips <robertphillips@google.com>
> > 
> 
> TBR=egdaniel@google.com,bsalomon@google.com,robertphillips@google.com,brianosman@google.com,reviews@skia.org,stani@google.com
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> 
> Change-Id: I5cb8763cc837c83ebc6d10366fe2dd3efe35fb89
> Reviewed-on: https://skia-review.googlesource.com/13773
> Reviewed-by: Stan Iliev <stani@google.com>
> Commit-Queue: Stan Iliev <stani@google.com>
> 

TBR=egdaniel@google.com,bsalomon@google.com,robertphillips@google.com,reviews@skia.org,brianosman@google.com,stani@google.com
# Not skipping CQ checks because original CL landed > 1 day ago.

Change-Id: I92bc074e4fe37fa5c83186afadc472c03802e8f2
Reviewed-on: https://skia-review.googlesource.com/13975
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>
diff --git a/tests/ImageTest.cpp b/tests/ImageTest.cpp
index 77017f3..382a624 100644
--- a/tests/ImageTest.cpp
+++ b/tests/ImageTest.cpp
@@ -32,7 +32,9 @@
 #include "sk_tool_utils.h"
 
 #if SK_SUPPORT_GPU
+#include "GrContextPriv.h"
 #include "GrGpu.h"
+#include "GrTest.h"
 #endif
 
 using namespace sk_gpu_test;
@@ -808,44 +810,48 @@
     const int kWidth = 10;
     const int kHeight = 10;
     std::unique_ptr<uint32_t[]> pixels(new uint32_t[kWidth * kHeight]);
-    GrBackendTextureDesc backendDesc;
-    backendDesc.fFlags = kRenderTarget_GrBackendTextureFlag;
-    backendDesc.fOrigin = kBottomLeft_GrSurfaceOrigin;
-    backendDesc.fConfig = kRGBA_8888_GrPixelConfig;
-    backendDesc.fWidth = kWidth;
-    backendDesc.fHeight = kHeight;
-    backendDesc.fSampleCnt = 0;
-    backendDesc.fTextureHandle = ctxInfo.grContext()->getGpu()->createTestingOnlyBackendTexture(
-        pixels.get(), kWidth, kHeight, kRGBA_8888_GrPixelConfig, true);
+
+    GrContext* ctx = ctxInfo.grContext();
+
+    GrBackendObject backendTexHandle =
+            ctxInfo.grContext()->getGpu()->createTestingOnlyBackendTexture(
+                    pixels.get(), kWidth, kHeight, kRGBA_8888_GrPixelConfig, true);
+
+    GrBackendTexture backendTex = GrTest::CreateBackendTexture(ctx->contextPriv().getBackend(),
+                                                               kWidth,
+                                                               kHeight,
+                                                               kRGBA_8888_GrPixelConfig,
+                                                               backendTexHandle);
 
     TextureReleaseChecker releaseChecker;
+    GrSurfaceOrigin texOrigin = kBottomLeft_GrSurfaceOrigin;
     sk_sp<SkImage> refImg(
-        SkImage::MakeFromTexture(ctxInfo.grContext(), backendDesc, kPremul_SkAlphaType,
+        SkImage::MakeFromTexture(ctx, backendTex, texOrigin, kPremul_SkAlphaType, nullptr,
                                  TextureReleaseChecker::Release, &releaseChecker));
 
     GrSurfaceOrigin readBackOrigin;
     GrBackendObject readBackHandle = refImg->getTextureHandle(false, &readBackOrigin);
     // TODO: Make it so we can check this (see skbug.com/5019)
 #if 0
-    if (*readBackHandle != *(backendDesc.fTextureHandle)) {
+    if (*readBackHandle != *(backendTexHandle)) {
         ERRORF(reporter, "backend mismatch %d %d\n",
-                       (int)readBackHandle, (int)backendDesc.fTextureHandle);
+                       (int)readBackHandle, (int)backendTexHandle);
     }
-    REPORTER_ASSERT(reporter, readBackHandle == backendDesc.fTextureHandle);
+    REPORTER_ASSERT(reporter, readBackHandle == backendTexHandle);
 #else
     REPORTER_ASSERT(reporter, SkToBool(readBackHandle));
 #endif
-    if (readBackOrigin != backendDesc.fOrigin) {
-        ERRORF(reporter, "origin mismatch %d %d\n", readBackOrigin, backendDesc.fOrigin);
+    if (readBackOrigin != texOrigin) {
+        ERRORF(reporter, "origin mismatch %d %d\n", readBackOrigin, texOrigin);
     }
-    REPORTER_ASSERT(reporter, readBackOrigin == backendDesc.fOrigin);
+    REPORTER_ASSERT(reporter, readBackOrigin == texOrigin);
 
     // Now exercise the release proc
     REPORTER_ASSERT(reporter, 0 == releaseChecker.fReleaseCount);
     refImg.reset(nullptr); // force a release of the image
     REPORTER_ASSERT(reporter, 1 == releaseChecker.fReleaseCount);
 
-    ctxInfo.grContext()->getGpu()->deleteTestingOnlyBackendTexture(backendDesc.fTextureHandle);
+    ctxInfo.grContext()->getGpu()->deleteTestingOnlyBackendTexture(backendTexHandle);
 }
 
 static void check_images_same(skiatest::Reporter* reporter, const SkImage* a, const SkImage* b) {