Use const path in SkPathContainsPoint

Source/core/platform/graphics/skia/SkiaUtils.cpp

Index: Source/core/platform/graphics/skia/SkiaUtils.cpp
diff --git a/Source/core/platform/graphics/skia/SkiaUtils.cpp b/Source/core/platform/graphics/skia/SkiaUtils.cpp
index 7c2bfdd806715bd001c8f385f575c76bd166b046..77ed53cf118a190e49be748d8754390ad18600d3 100644
--- a/Source/core/platform/graphics/skia/SkiaUtils.cpp
+++ b/Source/core/platform/graphics/skia/SkiaUtils.cpp
@@ -139,9 +139,9 @@ void ClipRectToCanvas(const GraphicsContext* context, const SkRect& srcRect, SkR
         destRect->setEmpty();
 }
 
-bool SkPathContainsPoint(SkPath* originalPath, const FloatPoint& point, SkPath::FillType ft)
+bool SkPathContainsPoint(const SkPath& originalPath, const FloatPoint& point, SkPath::FillType ft)
 {
-    SkRect bounds = originalPath->getBounds();
+    SkRect bounds = originalPath.getBounds();
 
     // We can immediately return false if the point is outside the bounding
     // rect.  We don't use bounds.contains() here, since it would exclude
@@ -167,21 +167,17 @@ bool SkPathContainsPoint(SkPath* originalPath, const FloatPoint& point, SkPath::
     SkRegion rgn;  
     SkRegion clip;
     SkMatrix m;
-    SkPath scaledPath;
-
-    SkPath::FillType originalFillType = originalPath->getFillType();
-    originalPath->setFillType(ft);
+    SkPath scaledPath(originalPath);
 
+    scaledPath.setFillType(ft);
     m.setScale(scale, scale);
-    originalPath->transform(m, &scaledPath);
+    scaledPath.transform(m, 0);

[pdr., 2013/07/23 00:27:21]

Oh my, we create a transform just to scale the path? I bet there's another nice
speedup if we just add void path::scale(float, float)!

Just pointing this out in case you want to play in this space in a future patch
:)

 
     int x = static_cast<int>(floorf(0.5f + point.x() * scale));
     int y = static_cast<int>(floorf(0.5f + point.y() * scale));
     clip.setRect(x - 1, y - 1, x + 1, y + 1);
 
-    bool contains = rgn.setPath(scaledPath, clip);
-    originalPath->setFillType(originalFillType);
-    return contains;
+    return rgn.setPath(scaledPath, clip);
 }
 
 }  // namespace WebCore