Remove use of SkBitmap::Config (deprecated) from Source/web/tests/.

Source/web/tests/WebViewTest.cpp

Index: Source/web/tests/WebViewTest.cpp
diff --git a/Source/web/tests/WebViewTest.cpp b/Source/web/tests/WebViewTest.cpp
index 1789b3c0747325ebf0b8149a42de545b9bf6b938..5dc9b21c479e39d1d2a5825c8092630a740fcc3f 100644
--- a/Source/web/tests/WebViewTest.cpp
+++ b/Source/web/tests/WebViewTest.cpp
@@ -285,10 +285,8 @@ TEST_F(WebViewTest, SetBaseBackgroundColorAndBlendWithExistingContent)
 
     // Set canvas background to red with alpha.
     SkBitmap bitmap;
-    bitmap.setConfig(SkBitmap::kARGB_8888_Config, kWidth, kHeight);
-    bitmap.allocPixels();
-    SkBitmapDevice device(bitmap);
-    SkCanvas canvas(&device);
+    ASSERT_TRUE(bitmap.allocN32Pixels(kWidth, kHeight));
+    SkCanvas canvas(bitmap);
     canvas.clear(kAlphaRed);
     webView->paint(&canvas, WebRect(0, 0, kWidth, kHeight));