Add desired width & height to drawContext (as opposed to using the width & height of the RT)

tests/RectangleTextureTest.cpp

Index: tests/RectangleTextureTest.cpp
diff --git a/tests/RectangleTextureTest.cpp b/tests/RectangleTextureTest.cpp
index 2fa51e2ba22f8db4f29487f51f36ee08b764672d..51f7b44cff8f9f3843ddb8932d1b1e06dcb3db7c 100644
--- a/tests/RectangleTextureTest.cpp
+++ b/tests/RectangleTextureTest.cpp
@@ -89,8 +89,11 @@ static void test_copy_surface_dst(skiatest::Reporter* reporter, GrContext* conte
 static void test_clear(skiatest::Reporter* reporter, GrContext* context,
                        GrTexture* rectangleTexture) {
     if (rectangleTexture->asRenderTarget()) {
+        int w = rectangleTexture->width();
+        int h = rectangleTexture->height();
+
         sk_sp<GrDrawContext> dc(
-                            context->drawContext(sk_ref_sp(rectangleTexture->asRenderTarget())));
+                       context->drawContext(w, h, sk_ref_sp(rectangleTexture->asRenderTarget())));
         if (!dc) {
             ERRORF(reporter, "Could not get GrDrawContext for rectangle texture.");
             return;
@@ -100,8 +103,6 @@ static void test_clear(skiatest::Reporter* reporter, GrContext* context,
         GrColor color0 = GrColorPackRGBA(0xA, 0xB, 0xC, 0xD);
         dc->clear(nullptr, color0, false);
 
-        int w = rectangleTexture->width();
-        int h = rectangleTexture->height();
         int pixelCnt = w * h;
         SkAutoTMalloc<uint32_t> expectedPixels(pixelCnt);