Change old PRG to be SkLCGRandom; change new one to SkRandom

gm/ovals.cpp

Index: gm/ovals.cpp
diff --git a/gm/ovals.cpp b/gm/ovals.cpp
old mode 100755
new mode 100644
index ae727b9ef30249f05373eec67b227420114a4bc6..96e04885e3e7e5eda82849fa20a8d368be404acd
--- a/gm/ovals.cpp
+++ b/gm/ovals.cpp
@@ -125,7 +125,7 @@ protected:
         }
     }
 
-    SkColor genColor(SkMWCRandom* rand) {
+    SkColor genColor(SkRandom* rand) {
         SkScalar hsv[3];
         hsv[0] = SkFloatToScalar(rand->nextRangeF(0.0f, 360.0f));
         hsv[1] = SkFloatToScalar(rand->nextRangeF(0.75f, 1.0f));
@@ -135,7 +135,7 @@ protected:
     }
 
     virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
-        SkMWCRandom rand(1);
+        SkRandom rand(1);
         canvas->translate(20 * SK_Scalar1, 20 * SK_Scalar1);
         SkRect oval = SkRect::MakeLTRB(-20, -30, 20, 30);