Simplify PDFiumEngine::GetFlattenedPrintData().

pdf/pdfium/pdfium_engine.cc

Index: pdf/pdfium/pdfium_engine.cc
diff --git a/pdf/pdfium/pdfium_engine.cc b/pdf/pdfium/pdfium_engine.cc
index 6506d8c96b1038af85ffed479c6b7d05e9dcb8c1..14bbb4e84384120bae9b0bf88141277e4e2c9e73 100644
--- a/pdf/pdfium/pdfium_engine.cc
+++ b/pdf/pdfium/pdfium_engine.cc
@@ -1445,29 +1445,17 @@ pp::Buffer_Dev PDFiumEngine::PrintPagesAsRasterPDF(
 }
 
 pp::Buffer_Dev PDFiumEngine::GetFlattenedPrintData(const FPDF_DOCUMENT& doc) {
+  pp::Buffer_Dev buffer;
   int page_count = FPDF_GetPageCount(doc);
-  bool flatten_succeeded = true;
   for (int i = 0; i < page_count; ++i) {
     FPDF_PAGE page = FPDF_LoadPage(doc, i);
     DCHECK(page);
-    if (page) {
-      int flatten_ret = FPDFPage_Flatten(page, FLAT_PRINT);
-      FPDF_ClosePage(page);
-      if (flatten_ret == FLATTEN_FAIL) {
-        flatten_succeeded = false;
-        break;
-      }
-    } else {
-      flatten_succeeded = false;
-      break;
-    }
-  }
-  if (!flatten_succeeded) {
-    FPDF_CloseDocument(doc);
-    return pp::Buffer_Dev();
+    int flatten_ret = FPDFPage_Flatten(page, FLAT_PRINT);
+    FPDF_ClosePage(page);
+    if (flatten_ret == FLATTEN_FAIL)
+      return buffer;
   }
 
-  pp::Buffer_Dev buffer;
   PDFiumMemBufferFileWrite output_file_write;
   if (FPDF_SaveAsCopy(doc, &output_file_write, 0)) {
     buffer = pp::Buffer_Dev(