Revert "Add Atlas Text interface for rendering SDF glyphs."

This reverts commit 39631f3df172feb385527a5d125bc53b0bded7e6.

Reason for revert: break google3 rool

Original change's description:
> Add Atlas Text interface for rendering SDF glyphs.
> 
> This new API is built upon SDF text atlas code from the GPU backend. Unlike using the GPU
> backend to draw text, this set of interfaces allows the client to render the SDF glyphs. The
> client issues text draws to potentially multiple targets and then the client flushes. The
> client then gets commands from Skia with data to put into a texture atlas and vertices to
> draw that reference the texture. The client is responsible for creating the texture, uploading
> the SDF data to the texture, and drawing the vertices provided by Skia.
> 
> Change-Id: Ie9447e19b85f0ce1c2b942e5216c787a74f335d3
> Reviewed-on: https://skia-review.googlesource.com/59360
> Commit-Queue: Brian Salomon <bsalomon@google.com>
> Reviewed-by: Robert Phillips <robertphillips@google.com>

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

Change-Id: I4aad0c99e645b476fd8ba25731f2a10e8802bb25
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/73420
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>

1 files changed, 0 insertions, 79 deletions

diff --git a/src/core/SkArenaAllocList.h b/src/core/SkArenaAllocList.h
deleted file mode 100644
index b4e442b0bd..0000000000
--- a/src/core/SkArenaAllocList.h
+++ /dev/null
@@ -1,79 +0,0 @@
-/*
- * Copyright 2017 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#ifndef SkArenaAllocList_DEFINED
-#define SkArenaAllocList_DEFINED
-
-#include "SkArenaAlloc.h"
-
-/**
- * A singly linked list of Ts stored in a SkArenaAlloc. The arena rather than the list owns
- * the elements. This supports forward iteration and range based for loops.
- */
-template <typename T>
-class SkArenaAllocList {
-private:
-    struct Node;
-
-public:
-    SkArenaAllocList() = default;
-
-    void reset() { fHead = fTail = nullptr; }
-
-    template <typename... Args>
-    inline T& append(SkArenaAlloc* arena, Args... args);
-
-    class Iter {
-    public:
-        Iter() = default;
-        inline Iter& operator++();
-        T& operator*() const { return fCurr->fT; }
-        T* operator->() const { return &fCurr->fT; }
-        bool operator==(const Iter& that) const { return fCurr == that.fCurr; }
-        bool operator!=(const Iter& that) const { return !(*this == that); }
-
-    private:
-        friend class SkArenaAllocList;
-        explicit Iter(Node* node) : fCurr(node) {}
-        Node* fCurr = nullptr;
-    };
-
-    Iter begin() { return Iter(fHead); }
-    Iter end() { return Iter(); }
-    Iter tail() { return Iter(fTail); }
-
-private:
-    struct Node {
-        template <typename... Args>
-        Node(Args... args) : fT(std::forward<Args>(args)...) {}
-        T fT;
-        Node* fNext = nullptr;
-    };
-    Node* fHead = nullptr;
-    Node* fTail = nullptr;
-};
-
-template <typename T>
-template <typename... Args>
-T& SkArenaAllocList<T>::append(SkArenaAlloc* arena, Args... args) {
-    SkASSERT(!fHead == !fTail);
-    auto* n = arena->make<Node>(std::forward<Args>(args)...);
-    if (!fTail) {
-        fHead = fTail = n;
-    } else {
-        fTail = fTail->fNext = n;
-    }
-    return fTail->fT;
-}
-
-template <typename T>
-typename SkArenaAllocList<T>::Iter& SkArenaAllocList<T>::Iter::operator++() {
-    fCurr = fCurr->fNext;
-    return *this;
-}
-
-#endif