Add two feature flags for PDF save.

Add flags for PDF WebUI to get save data from renderer in blocks and use
in-memory bytes to save a PDF to disk instead of redownloading it.

Bug: 394111292,40293042
Change-Id: I2320453aee0bd15243da1f92734e71eef43bfe3e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6263346
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Ramin Halavati <rhalavati@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1420302}

chrome/browser/pdf/pdf_extension_util.cc

@@ -263,6 +263,9 @@ void AddAdditionalData(bool enable_printing,
 #endif  // BUILDFLAG(ENABLE_PDF_INK2)
   dict->Set("printingEnabled", printing_enabled);
   dict->Set("pdfAnnotationsEnabled", annotations_enabled);
+  dict->Set("PdfGetSaveDataInBlocks",
+            base::FeatureList::IsEnabled(
+                chrome_pdf::features::kPdfGetSaveDataInBlocks));
   dict->Set("pdfUseShowSaveFilePicker",
             base::FeatureList::IsEnabled(
                 chrome_pdf::features::kPdfUseShowSaveFilePicker));

pdf/pdf_features.cc

@@ -35,6 +35,17 @@ BASE_FEATURE(kPdfPartialLoading,
 
 BASE_FEATURE(kPdfPortfolio, "PdfPortfolio", base::FEATURE_DISABLED_BY_DEFAULT);
 
+// Enables PDF WebUI save to get PDF content from renderer in blocks.
+BASE_FEATURE(kPdfGetSaveDataInBlocks,
+             "PdfGetSaveDataInBlocks",
+             base::FEATURE_DISABLED_BY_DEFAULT);
+
+// Saves original PDFs to disk from the in-memory copy instead of redownloading
+// them.
+BASE_FEATURE(kPdfSaveOriginalFromMemory,
+             "PdfSaveOriginalFromMemory",
+             base::FEATURE_DISABLED_BY_DEFAULT);
+
 BASE_FEATURE(kPdfSearchify, "PdfSearchify", base::FEATURE_DISABLED_BY_DEFAULT);
 
 BASE_FEATURE(kPdfSearchifySave,

pdf/pdf_features.h

@@ -17,10 +17,12 @@ namespace chrome_pdf::features {
 
 BASE_DECLARE_FEATURE(kAccessiblePDFForm);
 BASE_DECLARE_FEATURE(kPdfCr23);
+BASE_DECLARE_FEATURE(kPdfGetSaveDataInBlocks);
 BASE_DECLARE_FEATURE(kPdfIncrementalLoading);
 BASE_DECLARE_FEATURE(kPdfOopif);
 BASE_DECLARE_FEATURE(kPdfPartialLoading);
 BASE_DECLARE_FEATURE(kPdfPortfolio);
+BASE_DECLARE_FEATURE(kPdfSaveOriginalFromMemory);
 BASE_DECLARE_FEATURE(kPdfSearchify);
 BASE_DECLARE_FEATURE(kPdfSearchifySave);
 BASE_DECLARE_FEATURE(kPdfTags);