[Downloads] Add context parameter to help center article URL.

chrome/browser/download/download_commands.h

Index: chrome/browser/download/download_commands.h
diff --git a/chrome/browser/download/download_commands.h b/chrome/browser/download/download_commands.h
index d6849b41beff9b40af8dec29b79d1660f7d78874..3ecfa0882d668ff00deb11c1d78e67621eb632f2 100644
--- a/chrome/browser/download/download_commands.h
+++ b/chrome/browser/download/download_commands.h
@@ -5,8 +5,8 @@
 #ifndef CHROME_BROWSER_DOWNLOAD_DOWNLOAD_COMMANDS_H_
 #define CHROME_BROWSER_DOWNLOAD_DOWNLOAD_COMMANDS_H_
 
+#include "base/gtest_prod_util.h"
 #include "base/strings/string16.h"
-
 #include "chrome/browser/ui/browser.h"
 #include "content/public/browser/download_item.h"
 #include "content/public/browser/page_navigator.h"
@@ -47,11 +47,13 @@ class DownloadCommands {
 #endif
 
  private:
-  Browser* GetBrowser() const;
+  FRIEND_TEST_ALL_PREFIXES(
+      DownloadCommandsTest,
+      GetLearnMoreURLForInterruptedDownload_ContainsContext);
 
-  int GetCommandIconId(Command command);
-
-  int GetAlwaysOpenStringId() const;
+  Browser* GetBrowser() const;
+  int GetCommandIconId(Command command) const;
+  GURL GetLearnMoreURLForInterruptedDownload() const;
 
   content::DownloadItem* const download_item_;
 };