Revert of Revert of remove unused (by clients) SkPathUtils (patchset #1 id:1 of https://codereview.chromium.org/1060703003/)

Reason for revert:
fix (removal from gypi/gn files) has landed in chrome.

Original issue's description:
> Revert of remove unused (by clients) SkPathUtils (patchset #1 id:1 of https://codereview.chromium.org/1088383003/)
>
> Reason for revert:
> This change is causing the DEPS roll to fail:
>
>
> http://build.chromium.org/p/tryserver.chromium.linux/builders/android_chromium_gn_compile_rel/builds/78771/steps/gn/logs/stdio
>
> Original issue's description:
> > remove unused (by clients) SkPathUtils
> >
> > BUG=skia:
> >
> > Committed: https://skia.googlesource.com/skia/+/aab35d91b8b80acd1902594bbf542083fdfa4bb7
>
> TBR=scroggo@google.com,reed@chromium.org
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=skia:
>
> Committed: https://skia.googlesource.com/skia/+/bdb0bf5f8858043878d8a4fa8130c6c87bef3fd4

TBR=scroggo@google.com,jcgregorio@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Review URL: https://codereview.chromium.org/1091963002

1 files changed, 0 insertions, 152 deletions

diff --git a/src/utils/SkPathUtils.cpp b/src/utils/SkPathUtils.cpp
deleted file mode 100644
index fdca09aa63..0000000000
--- a/src/utils/SkPathUtils.cpp
+++ /dev/null
@@ -1,152 +0,0 @@
-/*
- *  CAUTION: EXPERIMENTAL CODE
- *
- *  This code is not to be used and will not be supported
- *  if it fails on you. DO NOT USE!
- *
- */
-
-#include "SkPathUtils.h"
-
-#include "SkPath.h"
-#include "SkPathOps.h" // this can't be found, how do I link it?
-#include "SkRegion.h"
-
-typedef void (*line2path)(SkPath*, const char*, int, int);
-#define SQRT_2 1.41421356237f
-#define ON  0xFF000000 // black pixel
-#define OFF 0x00000000 // transparent pixel
-
-// assumes stride is in bytes
-/*
-static void FillRandomBits( int chars, char* bits ){
-    SkTime time;
-    SkRandom rand = SkRandom( time.GetMSecs() );
-
-    for (int i = 0; i < chars; ++i){
-        bits[i] = rand.nextU();
-    }
-}OA
-*/
-
-static int GetBit( const char* buffer, int x ) {
-    int byte = x >> 3;
-    int bit = x & 7;
-
-    return buffer[byte] & (128 >> bit);
-}
-
-/*
-static void Line2path_pixel(SkPath* path, const char* line,
-                            int lineIdx, int width) {
-    for (int i = 0; i < width; ++i) {
-        // simply makes every ON pixel into a rect path
-        if (GetBit(line,i)) {
-            path->addRect(SkRect::MakeXYWH(i, lineIdx, 1, 1),
-                          SkPath::kCW_Direction);
-        }
-    }
-}
-
-static void Line2path_pixelCircle(SkPath* path, const char* line,
-                                  int lineIdx, int width) {
-    for (int i = 0; i < width; ++i) {
-        // simply makes every ON pixel into a circle path
-        if (GetBit(line,i)) {
-            path->addCircle(i + SK_ScalarHalf,
-                            lineIdx + SK_ScalarHalf,
-                            SQRT_2 / 2.0f);
-        }
-    }
-}
-*/
-
-static void Line2path_span(SkPath* path, const char* line,
-                           int lineIdx, int width) {
-    bool inRun = 0;
-    int start = 1;
-
-    for (int i = 0; i < width; ++i) {
-        int curPixel = GetBit(line,i);
-
-        if ( (curPixel!=0) != inRun ) { // if transition
-            if (curPixel) { // if transition on
-                inRun = 1;
-                start = i; // mark beginning of span
-            }else { // if transition off add the span as a path
-                inRun = 0;
-                path->addRect(SkRect::MakeXYWH(SkIntToScalar(start), SkIntToScalar(lineIdx),
-                                               SkIntToScalar(i-start), SK_Scalar1),
-                              SkPath::kCW_Direction);
-            }
-        }
-    }
-
-    if (inRun==1) { // close any open spans
-        int end = 0;
-        if ( GetBit(line,width-1) ) ++end;
-        path->addRect(SkRect::MakeXYWH(SkIntToScalar(start), SkIntToScalar(lineIdx),
-                                       SkIntToScalar(width - 1 + end - start), SK_Scalar1),
-                      SkPath::kCW_Direction);
-    } else if ( GetBit(line, width - 1) ) { // if last pixel on add
-        path->addRect(SkRect::MakeXYWH(width - SK_Scalar1, SkIntToScalar(lineIdx),
-                                       SK_Scalar1, SK_Scalar1),
-                      SkPath::kCW_Direction);
-    }
-}
-
-void SkPathUtils::BitsToPath_Path(SkPath* path,
-                        const char* bitmap,
-                        int w, int h, int stride) {
-    // loop for every line in bitmap
-    for (int i = 0; i < h; ++i) {
-        // fn ptr handles each line separately
-        //l2p_fn(path, &bitmap[i*stride], i, w);
-        Line2path_span(path, &bitmap[i*stride], i, w);
-    }
-    Simplify(*path, path); // simplify resulting path.
-}
-
-void SkPathUtils::BitsToPath_Region(SkPath* path,
-                               const char* bitmap,
-                               int w, int h, int stride) {
-    SkRegion region;
-
-    // loop for each line
-    for (int y = 0; y < h; ++y){
-        bool inRun = 0;
-        int start = 1;
-        const char* line = &bitmap[y * stride];
-
-        // loop for each pixel
-        for (int i = 0; i < w; ++i) {
-            int curPixel = GetBit(line,i);
-
-            if ( (curPixel!=0) != inRun ) { // if transition
-                if (curPixel) { // if transition on
-                    inRun = 1;
-                    start = i; // mark beginning of span
-                }else { // if transition off add the span as a path
-                    inRun = 0;
-                    //add here
-                    region.op(SkIRect::MakeXYWH(start, y, i-start, 1),
-                              SkRegion::kUnion_Op );
-                }
-            }
-        }
-        if (inRun==1) { // close any open spans
-            int end = 0;
-            if ( GetBit(line,w-1) ) ++end;
-            // add the thing here
-            region.op(SkIRect::MakeXYWH(start, y, w-1-start+end, 1),
-                      SkRegion::kUnion_Op );
-
-        } else if ( GetBit(line,w-1) ) { // if last pixel on add rect
-            // add the thing here
-            region.op(SkIRect::MakeXYWH(w-1, y, 1, 1),
-                      SkRegion::kUnion_Op );
-        }
-    }
-    // convert region to path
-    region.getBoundaryPath(path);
-}