move skpdiff into tools

experimental/skpdiff/SkDiffContext.h

Index: experimental/skpdiff/SkDiffContext.h
diff --git a/experimental/skpdiff/SkDiffContext.h b/experimental/skpdiff/SkDiffContext.h
deleted file mode 100644
index 93354e8dec0d1ce752aeb72094a6fbaf03bd6ebb..0000000000000000000000000000000000000000
--- a/experimental/skpdiff/SkDiffContext.h
+++ /dev/null
@@ -1,122 +0,0 @@
-/*
- * Copyright 2013 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#ifndef SkDiffContext_DEFINED
-#define SkDiffContext_DEFINED
-
-#include "SkString.h"
-#include "SkTArray.h"
-#include "SkTDArray.h"
-
-class SkWStream;
-class SkImageDiffer;
-
-/**
- * Collects records of diffs and outputs them as JSON.
- */
-class SkDiffContext {
-public:
-    SkDiffContext();
-    ~SkDiffContext();
-
-    /**
-     * Sets the differs to be used in each diff. Already started diffs will not retroactively use
-     * these.
-     * @param differs An array of differs to use. The array is copied, but not the differs
-     *                themselves.
-     */
-    void setDiffers(const SkTDArray<SkImageDiffer*>& differs);
-
-    /**
-     * Compares two directories of images with the given differ
-     * @param baselinePath The baseline directory's path
-     * @param testPath     The test directory's path
-     */
-    void diffDirectories(const char baselinePath[], const char testPath[]);
-
-    /**
-     * Compares two sets of images identified by glob style patterns with the given differ
-     * @param baselinePattern A pattern for baseline files
-     * @param testPattern     A pattern for test files that matches each file of the baseline file
-     */
-    void diffPatterns(const char baselinePattern[], const char testPattern[]);
-
-    /**
-     * Compares the images at the given paths
-     * @param baselinePath The baseline file path
-     * @param testPath     The matching test file path
-     */
-    void addDiff(const char* baselinePath, const char* testPath);
-
-    /**
-     * Output the records of each diff in JSON.
-     *
-     * The format of the JSON document is one top level array named "records".
-     * Each record in the array is an object with both a "baselinePath" and "testPath" string field.
-     * They also have an array named "diffs" with each element being one diff record for the two
-     * images indicated in the above field.
-     * A diff record includes:
-     *    "differName"       : string name of the diff metric used
-     *    "result"           : numerical result of the diff
-     *    "pointsOfInterest" : an array of coordinates (stored as a 2-array of ints) of interesting
-     *                         points
-     *
-     * Here is an example:
-     *
-     * {
-     *     "records": [
-     *         {
-     *             "baselinePath": "queue.png",
-     *             "testPath": "queue.png",
-     *             "diffs": [
-     *                 {
-     *                     "differName": "different_pixels",
-     *                     "result": 1,
-     *                     "pointsOfInterest": [
-     *                         [285,279],
-     *                     ]
-     *                 }
-     *             ]
-     *         }
-     *     ]
-     * }
-     *
-     * @param stream   The stream to output the diff to
-     * @param useJSONP True to adding padding to the JSON output to make it cross-site requestable.
-     */
-    void outputRecords(SkWStream& stream, bool useJSONP);
-
-    /**
-     * Output the records score in csv format.
-     */
-    void outputCsv(SkWStream& stream);
-
-
-private:
-    struct DiffData {
-        const char* fDiffName;
-        double fResult;
-        SkTDArray<SkIPoint> fPointsOfInterest;
-    };
-
-    struct DiffRecord {
-        SkString           fBaselinePath;
-        SkString               fTestPath;
-        SkTArray<DiffData>        fDiffs;
-        DiffRecord*                fNext;
-    };
-
-    // We use linked list for the records so that their pointers remain stable. A resizable array
-    // might change its pointers, which would make it harder for async diffs to record their
-    // results.
-    DiffRecord * fRecords;
-
-    SkImageDiffer** fDiffers;
-    int fDifferCount;
-};
-
-#endif