Add regression test for bug 806746.

Make sure there is text output when converting from PDF to PS for text
with negative size, which should be rendered rotated 180 degrees with
respect to the origin.

BUG=806746,827748

Change-Id: Ia214f25f8fdb945ecb5a046e07313e3237b2cf84
Reviewed-on: https://chromium-review.googlesource.com/989424
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Rebekah Potter <rbpotter@chromium.org>
Cr-Commit-Position: refs/heads/master@{#547940}

chrome/browser/printing/pdf_to_emf_converter_browsertest.cc

@@ -99,6 +99,19 @@ class PdfToEmfConverterBrowserTest : public InProcessBrowserTest {
   PdfToEmfConverterBrowserTest() : test_data_dir_(GetTestDataDir()) {}
   ~PdfToEmfConverterBrowserTest() override = default;
 
+  void RunSinglePagePdfToPostScriptConverterTest(
+      const PdfRenderSettings& pdf_settings,
+      base::StringPiece input_filename,
+      base::StringPiece output_filename) {
+    ASSERT_TRUE(GetTestInput(input_filename));
+    ASSERT_TRUE(StartPdfConverter(pdf_settings, 1));
+    ASSERT_TRUE(GetPage(0));
+    // The output is PS encapsulated in EMF.
+    ASSERT_TRUE(GetPageExpectedEmfData(output_filename));
+    ComparePageEmfHeader();
+    ComparePageEmfPayload();
+  }
+
   bool GetTestInput(base::StringPiece filename) {
     base::ScopedAllowBlockingForTesting allow_blocking;
 
@@ -301,15 +314,8 @@ IN_PROC_BROWSER_TEST_F(PdfToEmfConverterBrowserTest,
   const PdfRenderSettings pdf_settings(
       kLetter200DpiRect, gfx::Point(0, 0), k200DpiSize,
       /*autorotate=*/false, PdfRenderSettings::Mode::POSTSCRIPT_LEVEL2);
-  constexpr int kNumberOfPages = 1;
-
-  ASSERT_TRUE(GetTestInput("bug_767343.pdf"));
-  ASSERT_TRUE(StartPdfConverter(pdf_settings, kNumberOfPages));
-  ASSERT_TRUE(GetPage(0));
-  // The output is PS encapsulated in EMF.
-  ASSERT_TRUE(GetPageExpectedEmfData("bug_767343.emf"));
-  ComparePageEmfHeader();
-  ComparePageEmfPayload();
+  RunSinglePagePdfToPostScriptConverterTest(pdf_settings, "bug_767343.pdf",
+                                            "bug_767343.emf");
 }
 
 IN_PROC_BROWSER_TEST_F(PdfToEmfConverterBrowserTest,
@@ -317,15 +323,26 @@ IN_PROC_BROWSER_TEST_F(PdfToEmfConverterBrowserTest,
   const PdfRenderSettings pdf_settings(
       kLetter200DpiRect, gfx::Point(0, 0), k200DpiSize,
       /*autorotate=*/false, PdfRenderSettings::Mode::POSTSCRIPT_LEVEL3);
-  constexpr int kNumberOfPages = 1;
+  RunSinglePagePdfToPostScriptConverterTest(pdf_settings, "bug_767343.pdf",
+                                            "bug_767343.emf");
+}
 
-  ASSERT_TRUE(GetTestInput("bug_767343.pdf"));
-  ASSERT_TRUE(StartPdfConverter(pdf_settings, kNumberOfPages));
-  ASSERT_TRUE(GetPage(0));
-  // The output is PS encapsulated in EMF.
-  ASSERT_TRUE(GetPageExpectedEmfData("bug_767343.emf"));
-  ComparePageEmfHeader();
-  ComparePageEmfPayload();
+IN_PROC_BROWSER_TEST_F(PdfToEmfConverterBrowserTest,
+                       PostScriptLevel2WithNegativeSizedText) {
+  const PdfRenderSettings pdf_settings(
+      kLetter200DpiRect, gfx::Point(0, 0), k200DpiSize,
+      /*autorotate=*/false, PdfRenderSettings::Mode::POSTSCRIPT_LEVEL2);
+  RunSinglePagePdfToPostScriptConverterTest(pdf_settings, "bug_806746.pdf",
+                                            "bug_806746.emf");
+}
+
+IN_PROC_BROWSER_TEST_F(PdfToEmfConverterBrowserTest,
+                       PostScriptLevel3WithNegativeSizedText) {
+  const PdfRenderSettings pdf_settings(
+      kLetter200DpiRect, gfx::Point(0, 0), k200DpiSize,
+      /*autorotate=*/false, PdfRenderSettings::Mode::POSTSCRIPT_LEVEL3);
+  RunSinglePagePdfToPostScriptConverterTest(pdf_settings, "bug_806746.pdf",
+                                            "bug_806746.emf");
 }
 
 }  // namespace printing