Prefer opening PDF downloads in the browser.

chrome/browser/download/download_item_model.h

Index: chrome/browser/download/download_item_model.h
diff --git a/chrome/browser/download/download_item_model.h b/chrome/browser/download/download_item_model.h
index 5a2c141ac5679a9574a37c83692566ff77391cff..05a1023f5c32b653a665c9e4e71539f078a632e1 100644
--- a/chrome/browser/download/download_item_model.h
+++ b/chrome/browser/download/download_item_model.h
@@ -126,6 +126,18 @@ class DownloadItemModel {
   // Change what's returned by ShouldNotifyUI().
   void SetShouldNotifyUI(bool should_notify);
 
+  // Returns |true| if opening in the browser is preferred for this download. If
+  // |false|, the download should be opened with the system default application.
+  bool ShouldPreferOpeningInBrowser() const;
+
+  // Change what's returned by ShouldPreferOpeningInBrowser to |preference|.
+  void SetShouldPreferOpeningInBrowser(bool preference);
+
+  // Open the download using the platform handler for the download. The behavior
+  // of this method will be different from DownloadItem::OpenDownload() if
+  // ShouldPreferOpeningInBrowser().
+  void OpenUsingPlatformHandler();
+
   content::DownloadItem* download() { return download_; }
 
  private: