remove some unused stuff

src/gpu/GrPlotMgr.h

-/*
- * Copyright 2010 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#ifndef GrPlotMgr_DEFINED
-#define GrPlotMgr_DEFINED
-
-#include "GrTypes.h"
-#include "SkTypes.h"
-
-class GrPlotMgr : SkNoncopyable {
-public:
-    GrPlotMgr(int width, int height) {
-        fDim.set(width, height);
-        size_t needed = width * height;
-        if (needed <= sizeof(fStorage)) {
-            fBusy = fStorage;
-        } else {
-            fBusy = SkNEW_ARRAY(char, needed);
-        }
-        this->reset();
-    }
-
-    ~GrPlotMgr() {
-        if (fBusy != fStorage) {
-            delete[] fBusy;
-        }
-    }
-
-    void reset() {
-        sk_bzero(fBusy, fDim.fX * fDim.fY);
-    }
-
-    bool newPlot(SkIPoint16* loc) {
-        char* busy = fBusy;
-        for (int y = 0; y < fDim.fY; y++) {
-            for (int x = 0; x < fDim.fX; x++) {
-                if (!*busy) {
-                    *busy = true;
-                    loc->set(x, y);
-                    return true;
-                }
-                busy++;
-            }
-        }
-        return false;
-    }
-
-    bool isBusy(int x, int y) const {
-        SkASSERT((unsigned)x < (unsigned)fDim.fX);
-        SkASSERT((unsigned)y < (unsigned)fDim.fY);
-        return fBusy[y * fDim.fX + x] != 0;
-    }
-
-    void freePlot(int x, int y) {
-        SkASSERT((unsigned)x < (unsigned)fDim.fX);
-        SkASSERT((unsigned)y < (unsigned)fDim.fY);
-        fBusy[y * fDim.fX + x] = false;
-    }
-
-private:
-    enum {
-        STORAGE = 64
-    };
-    char fStorage[STORAGE];
-    char* fBusy;
-    SkIPoint16  fDim;
-};
-
-#endif