Revert "Added SkImage::MakeCrossContextFromEncoded"

This reverts commit 83b1b3db36e8622f4bbc8c391d5c714e258d1e03.

Reason for revert: unit test failing and asan leaks

Original change's description:
> Added SkImage::MakeCrossContextFromEncoded
> 
> Designed for Flutter's threading architecture, with
> an eye to being useful to other clients. Under the
> hood, uses a new image generator class to lazily wrap
> a texture for multiple GrContexts.
> 
> Bug: skia:
> Change-Id: I6c37b12c8ab5bce94b91190e5f0beb91d31ae81b
> Reviewed-on: https://skia-review.googlesource.com/14180
> Commit-Queue: Brian Osman <brianosman@google.com>
> Reviewed-by: Brian Salomon <bsalomon@google.com>
> 

TBR=egdaniel@google.com,bsalomon@google.com,robertphillips@google.com,brianosman@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Change-Id: I1f0bf580aa0ea2d132e18b64ff610ddac9d073a7
Reviewed-on: https://skia-review.googlesource.com/15892
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>

1 files changed, 0 insertions, 1 deletions

diff --git a/tools/gpu/GrTest.cpp b/tools/gpu/GrTest.cpp
index cd21e83ab1..6dc21bb836 100644
--- a/tools/gpu/GrTest.cpp
+++ b/tools/gpu/GrTest.cpp
@@ -337,7 +337,6 @@ public:
     sk_sp<GrSemaphore> SK_WARN_UNUSED_RESULT makeSemaphore() override { return nullptr; }
     void insertSemaphore(sk_sp<GrSemaphore> semaphore, bool flush) override {}
     void waitSemaphore(sk_sp<GrSemaphore> semaphore) override {}
-    sk_sp<GrSemaphore> prepareTextureForCrossContextUsage(GrTexture*) override { return nullptr; }
 
 private:
     void onResetContext(uint32_t resetBits) override {}