Revert "Re-land sksl fragment processor support"

This reverts commit c070939fd1a954b7a492bc30f0cf64a664b90181.

Reason for revert: 

This has some knock-on effects in the generation of Android.bp from our GN files.  See gn/gn_to_bp.py?  We're seeing things like "tmp/tmpsBVycx/gen/" end up in the include search path in Android.bp, which obviously don't exist there...

Original change's description:
> Re-land sksl fragment processor support
> 
> This reverts commit ed50200682e0de72c3abecaa4d5324ebcd1ed9f9.
> 
> Bug: skia:
> Change-Id: I9caa7454b391450620d6989dc472abb3cf7a2cab
> Reviewed-on: https://skia-review.googlesource.com/20965
> Reviewed-by: Ben Wagner <benjaminwagner@google.com>
> Commit-Queue: Ethan Nicholas <ethannicholas@google.com>

TBR=benjaminwagner@google.com,ethannicholas@google.com

Change-Id: I502486b5405923b322429219f4cc396a45a14cea
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:
Reviewed-on: https://skia-review.googlesource.com/20990
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>

1 files changed, 0 insertions, 51 deletions

diff --git a/src/sksl/ir/SkSLSetting.h b/src/sksl/ir/SkSLSetting.h
deleted file mode 100644
index 995fcf55bf..0000000000
--- a/src/sksl/ir/SkSLSetting.h
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- * Copyright 2016 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#ifndef SKSL_SETTING
-#define SKSL_SETTING
-
-#include "SkSLContext.h"
-#include "SkSLExpression.h"
-
-namespace SkSL {
-
-/**
- * Represents a compile-time constant setting, such as sk_Caps.fbFetchSupport. These are generally
- * collapsed down to their constant representations during the compilation process.
- */
-struct Setting : public Expression {
-    Setting(Position position, String name, std::unique_ptr<Expression> value)
-    : INHERITED(position, kSetting_Kind, value->fType)
-    , fName(std::move(name))
-    , fValue(std::move(value)) {
-        ASSERT(fValue->isConstant());
-    }
-
-    std::unique_ptr<Expression> constantPropagate(const IRGenerator& irGenerator,
-                                                  const DefinitionMap& definitions) override;
-
-    String description() const override {
-        return fName;
-    }
-
-    bool hasSideEffects() const override {
-        return false;
-    }
-
-    bool isConstant() const override {
-        return true;
-    }
-
-    const String fName;
-    std::unique_ptr<Expression> fValue;
-
-    typedef Expression INHERITED;
-};
-
-} // namespace
-
-#endif