gm self-test: use a pathologically simple test case instead of dashing2

gm/selftest.cpp

Index: gm/selftest.cpp
===================================================================
--- gm/selftest.cpp	(revision 0)
+++ gm/selftest.cpp	(revision 0)
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2013 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+/**
+ * Pathologically simple drawing tests, designed to generate consistent
+ * output images across platforms for gm/tests/run.sh
+ */
+
+#include "gm.h"
+#include "SkCanvas.h"
+#include "SkPaint.h"
+
+class SelfTestGM : public skiagm::GM {
+public:
+    SelfTestGM(const char name[], SkColor color) : fName(name), fColor(color) {}
+    const static int kWidth = 300;
+    const static int kHeight = 200;
+
+protected:
+    SkString onShortName() {
+        return fName;
+    }
+
+    SkISize onISize() { return skiagm::make_isize(kWidth, kHeight); }
+
+    virtual void onDraw(SkCanvas* canvas) {
+        SkPaint paint;
+        paint.setStyle(SkPaint::kFill_Style);
+        paint.setColor(fColor);
+        canvas->drawRectCoords(0, 0, SkIntToScalar(kWidth), SkIntToScalar(kHeight), paint);
+    }
+
+private:
+    const SkString fName;
+    const SkColor fColor;
+};
+
+//////////////////////////////////////////////////////////////////////////////
+
+static skiagm::GM* F1(void*) { return new SelfTestGM("selftest1", SK_ColorGREEN); }
+static skiagm::GM* F2(void*) { return new SelfTestGM("selftest2", SK_ColorBLUE); }
+
+static skiagm::GMRegistry gR1(F1);
+static skiagm::GMRegistry gR2(F2);