Include referrer chain with inline install requests.

chrome/browser/extensions/webstore_inline_installer.h

Index: chrome/browser/extensions/webstore_inline_installer.h
diff --git a/chrome/browser/extensions/webstore_inline_installer.h b/chrome/browser/extensions/webstore_inline_installer.h
index 9e11fa42e630eb0dff533f2c5aa7519dfe3bb00e..51470337b8894473f63e6f59cba58f8c466f965f 100644
--- a/chrome/browser/extensions/webstore_inline_installer.h
+++ b/chrome/browser/extensions/webstore_inline_installer.h
@@ -5,6 +5,7 @@
 #ifndef CHROME_BROWSER_EXTENSIONS_WEBSTORE_INLINE_INSTALLER_H_
 #define CHROME_BROWSER_EXTENSIONS_WEBSTORE_INLINE_INSTALLER_H_
 
+#include <memory>
 #include <string>
 
 #include "base/macros.h"
@@ -49,6 +50,7 @@ class WebstoreInlineInstaller : public WebstoreStandaloneInstaller,
   ~WebstoreInlineInstaller() override;
 
   // Implementations WebstoreStandaloneInstaller Template Method's hooks.
+  void OnBeforeWebstoreDataRequest(WebstoreDataFetcher* fetcher) override;
   bool CheckRequestorAlive() const override;
   const GURL& GetRequestorURL() const override;
   bool ShouldShowPostInstallUI() const override;
@@ -73,6 +75,9 @@ class WebstoreInlineInstaller : public WebstoreStandaloneInstaller,
   static bool IsRequestorURLInVerifiedSite(const GURL& requestor_url,
                                            const std::string& verified_site);
 
+  void StartWebstoreDataRequest(WebstoreDataFetcher* fetcher,
+                                const std::vector<GURL> redirect_list);
+
   // This corresponds to the frame that initiated the install request.
   content::RenderFrameHost* host_;
   GURL requestor_url_;