make tests portable by using 565 compatible colors

gm/dstreadshuffle.cpp

Index: gm/dstreadshuffle.cpp
diff --git a/gm/dstreadshuffle.cpp b/gm/dstreadshuffle.cpp
index 756e922ea9cc55ef2cbf01ff7c06a13eb010fd62..8cdccbc8f855263c4259f543abe7492fd9c70de8 100644
--- a/gm/dstreadshuffle.cpp
+++ b/gm/dstreadshuffle.cpp
@@ -87,6 +87,7 @@ protected:
             case kText_ShapeType: {
                 const char* text = "Hello!";
                 paint->setTextSize(30);
+                sk_tool_utils::set_portable_typeface(paint);
                 canvas->drawText(text, strlen(text), 0, 0, *paint);
             }
             default:
@@ -96,12 +97,12 @@ protected:
 
     static SkColor GetColor(SkRandom* random, int i, int nextColor) {
         static SkColor colors[] = { SK_ColorRED,
-                                    0xFFFF7F00, // Orange
+                                    sk_tool_utils::color_to_565(0xFFFF7F00), // Orange
                                     SK_ColorYELLOW,
                                     SK_ColorGREEN,
                                     SK_ColorBLUE,
-                                    0xFF4B0082, // indigo
-                                    0xFF7F00FF }; // violet
+                                    sk_tool_utils::color_to_565(0xFF4B0082), // indigo
+                                    sk_tool_utils::color_to_565(0xFF7F00FF) }; // violet
         SkColor color;
         int index = nextColor % SK_ARRAY_COUNT(colors);
         switch (i) {