SkBitmap move

gm/arithmode.cpp

Index: gm/arithmode.cpp
diff --git a/gm/arithmode.cpp b/gm/arithmode.cpp
index eb2ecb8abd0fe891771d636f059ed1eb48be55d3..700d790f06eb160802e97c8d237a8677beb235e6 100644
--- a/gm/arithmode.cpp
+++ b/gm/arithmode.cpp
@@ -19,7 +19,7 @@ static SkBitmap make_bm() {
     SkBitmap bm;
     bm.allocN32Pixels(WW, HH);
     bm.eraseColor(SK_ColorTRANSPARENT);
-    return bm;
+    return skstd::move(bm);
 }
 
 static SkBitmap make_src() {
@@ -35,7 +35,7 @@ static SkBitmap make_src() {
                                                  SkShader::kClamp_TileMode);
     paint.setShader(s)->unref();
     canvas.drawPaint(paint);
-    return bm;
+    return skstd::move(bm);
 }
 
 static SkBitmap make_dst() {
@@ -51,7 +51,7 @@ static SkBitmap make_dst() {
                                                  SkShader::kClamp_TileMode);
     paint.setShader(s)->unref();
     canvas.drawPaint(paint);
-    return bm;
+    return skstd::move(bm);
 }
 
 static void show_k_text(SkCanvas* canvas, SkScalar x, SkScalar y, const SkScalar k[]) {