Cannot preview PDFs

Source/web/tests/WebFrameTest.cpp

Index: Source/web/tests/WebFrameTest.cpp
diff --git a/Source/web/tests/WebFrameTest.cpp b/Source/web/tests/WebFrameTest.cpp
index 3abbb4a22f3d29d0fea37708f7660afa936d7304..c9ad06be9c35c6ccb2b4e31eb565864b3fc21515 100644
--- a/Source/web/tests/WebFrameTest.cpp
+++ b/Source/web/tests/WebFrameTest.cpp
@@ -82,6 +82,7 @@
 #include "public/web/WebFormElement.h"
 #include "public/web/WebFrameClient.h"
 #include "public/web/WebHistoryItem.h"
+#include "public/web/WebPrintParams.h"
 #include "public/web/WebRange.h"
 #include "public/web/WebRemoteFrame.h"
 #include "public/web/WebScriptSource.h"
@@ -5801,6 +5802,22 @@ TEST_F(WebFrameTest, NodeImageTestFloatLeft)
     nodeImageTestValidation(blink::IntSize(40, 40), dragImage.get());
 }
 
+TEST_F(WebFrameTest, PrintingBasic)
+{
+    FrameTestHelpers::WebViewHelper webViewHelper;
+    webViewHelper.initializeAndLoad("data:text/html,Hello, world.");
+
+    WebFrame* frame = webViewHelper.webView()->mainFrame();
+
+    WebPrintParams printParams;
+    printParams.printContentArea.width = 500;
+    printParams.printContentArea.height = 500;
+
+    int pageCount = frame->printBegin(printParams);
+    EXPECT_EQ(1, pageCount);
+    frame->printEnd();
+}
+
 class ThemeColorTestWebFrameClient : public FrameTestHelpers::TestWebFrameClient {
 public:
     ThemeColorTestWebFrameClient()