remove prototype pathops code

experimental/Intersection/EdgeDemoApp.mm

-#include "EdgeDemo.h"
-#import "SkCanvas.h"
-#import "SkWindow.h"
-#include "SkGraphics.h"
-#include "SkCGUtils.h"
-
-#include <time.h>
-#include <sys/time.h>
-
-class SkSampleView : public SkView {
-public:
-    SkSampleView() {
-        this->setVisibleP(true);
-        this->setClipToBounds(false);
-        useOld = false;
-    };
-protected:
-    virtual void onDraw(SkCanvas* canvas) {
-        static int step = 0; // 17907 drawLetters first error
-                             // drawStars triggers error at 33348
-                             // drawStars error not easy to debug last time I checked
-        static double seconds;
-        if (step == -1) {
-            timeval t;
-            gettimeofday(&t, NULL);
-            seconds = t.tv_sec+t.tv_usec/1000000.0;
-            step = 0;
-        }
-        canvas->drawColor(SK_ColorWHITE);
-        if (DrawEdgeDemo(canvas, step, useOld)) {
-            ++step;
-            if (step == -1) {
-                timeval t;
-                gettimeofday(&t, NULL);
-                double last = seconds;
-                seconds = t.tv_sec+t.tv_usec/1000000.0;
-                SkDebugf("old=%d seconds=%g\n", useOld, seconds - last);
-                useOld ^= true;
-                step = 0;
-            }
-            inval(NULL);
-        }
-    }
-    
-    virtual Click* onFindClickHandler(SkScalar , SkScalar ) {
-        useOld ^= true;
-        return NULL;
-    }
-
-private:
-    bool useOld;
-    typedef SkView INHERITED; 
-};
-
-void application_init();
-void application_term();
-
-void application_init() {
-    SkGraphics::Init();
-    SkEvent::Init();
-}
-
-void application_term() {
-    SkGraphics::Term();
-    SkEvent::Term();
-}
-
-class FillLayout : public SkView::Layout {
-protected:
-    virtual void onLayoutChildren(SkView* parent) {
-        SkView* view = SkView::F2BIter(parent).next();
-        view->setSize(parent->width(), parent->height());
-    }
-};
-
-#import "SimpleApp.h"
-
-@implementation SimpleNSView
-
-- (id)initWithDefaults {
-    if ((self = [super initWithDefaults])) {
-        fWind = new SkOSWindow(self); 
-        fWind->setLayout(new FillLayout, false);
-        fWind->attachChildToFront(new SkSampleView)->unref();
-    }
-    return self;
-}
-
-- (void)drawRect:(NSRect)dirtyRect {
-    CGContextRef ctx = (CGContextRef)[[NSGraphicsContext currentContext] graphicsPort];
-    SkCGDrawBitmap(ctx, fWind->getBitmap(), 0, 0);
-}
-
-@end