make zoomer text clearer

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2267623002

TBR=

Review-Url: https://codereview.chromium.org/2267623002

samplecode/SampleApp.cpp

diff --git a/samplecode/SampleApp.cpp b/samplecode/SampleApp.cpp
index 6297030..9e7e651 100644
--- a/samplecode/SampleApp.cpp
+++ b/samplecode/SampleApp.cpp
@@ -837,7 +837,9 @@
 
     fMouseX = fMouseY = 0;
     fFatBitsScale = 8;
-    fTypeface = SkTypeface::MakeFromTypeface(nullptr, SkTypeface::kBold);
+    fTypeface = SkTypeface::MakeFromName("Courier", SkFontStyle(SkFontStyle::kBold_Weight,
+                                                                SkFontStyle::kNormal_Width,
+                                                                SkFontStyle::kUpright_Slant));
     fShowZoomer = false;
 
     fZoomLevel = 0;
@@ -999,10 +1001,6 @@
     SkScalar inset = SkIntToScalar(-2);
     bounds.inset(inset, inset);
     canvas->drawRect(bounds, paint);
-    if (desiredColor != SK_ColorBLACK) {
-        paint.setColor(SK_ColorBLACK);
-        canvas->drawText(c_str, size, left + SK_Scalar1, top + SK_Scalar1, paint);
-    }
     paint.setColor(desiredColor);
     canvas->drawText(c_str, size, left, top, paint);
 }
@@ -1247,6 +1245,7 @@
     // Identify the pixel and its color on screen
     paint.setTypeface(fTypeface);
     paint.setAntiAlias(true);
+    paint.setTextSize(18);
     SkScalar lineHeight = paint.getFontMetrics(nullptr);
     SkString string;
     string.appendf("(%i, %i)", fMouseX, fMouseY);
@@ -1268,7 +1267,7 @@
     i += SK_Scalar1;
     string.reset();
     string.appendf("G: %X", SkColorGetG(color));
-    paint.setColor(SK_ColorGREEN);
+    paint.setColor(0xFF008800);
     drawText(canvas, string, left, SkScalarMulAdd(lineHeight, i, dest.fTop), paint);
     // Blue
     i += SK_Scalar1;