Reland of "more shader-->sp conversions (patchset #5 id:80001 of https://codereview.chromium.org/1789633002/ )"

This reverts commit 9283d20afc27571f7a871d1bd1100dd5df584941.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1793303002

Review URL: https://codereview.chromium.org/1793303002
diff --git a/gm/shadertext3.cpp b/gm/shadertext3.cpp
index 07ecd71..0d1c03e 100644
--- a/gm/shadertext3.cpp
+++ b/gm/shadertext3.cpp
@@ -26,11 +26,11 @@
 
     SkPaint     paint;
 
-    paint.setShader(SkGradientShader::CreateLinear(kPts0, kColors0, kPos,
-                    SK_ARRAY_COUNT(kColors0), SkShader::kClamp_TileMode))->unref();
+    paint.setShader(SkGradientShader::MakeLinear(kPts0, kColors0, kPos,
+                    SK_ARRAY_COUNT(kColors0), SkShader::kClamp_TileMode));
     canvas.drawPaint(paint);
-    paint.setShader(SkGradientShader::CreateLinear(kPts1, kColors1, kPos,
-                    SK_ARRAY_COUNT(kColors1), SkShader::kClamp_TileMode))->unref();
+    paint.setShader(SkGradientShader::MakeLinear(kPts1, kColors1, kPos,
+                    SK_ARRAY_COUNT(kColors1), SkShader::kClamp_TileMode));
     canvas.drawPaint(paint);
 }
 
@@ -100,17 +100,13 @@
                 localM.postRotate(20);
                 localM.postScale(1.15f, .85f);
 
-                SkAutoTUnref<SkShader> shader(SkShader::CreateBitmapShader(fBmp,
-                                                                           kTileModes[tm0],
-                                                                           kTileModes[tm1],
-                                                                           &localM));
-
                 SkPaint fillPaint;
                 fillPaint.setAntiAlias(true);
                 sk_tool_utils::set_portable_typeface(&fillPaint);
                 fillPaint.setTextSize(SkIntToScalar(kPointSize));
                 fillPaint.setFilterQuality(kLow_SkFilterQuality);
-                fillPaint.setShader(shader);
+                fillPaint.setShader(SkShader::MakeBitmapShader(fBmp, kTileModes[tm0],
+                                                               kTileModes[tm1], &localM));
 
                 canvas->drawText(kText, kTextLen, 0, 0, fillPaint);
                 canvas->drawText(kText, kTextLen, 0, 0, outlinePaint);