Add webstorePrivate API for installing bundles of extensions.

chrome/browser/extensions/webstore_installer.cc

Index: chrome/browser/extensions/webstore_installer.cc
diff --git a/chrome/browser/extensions/webstore_installer.cc b/chrome/browser/extensions/webstore_installer.cc
index a32f4c29c76363eb3280dc3b3b63336a5a4261f5..796e94ad0899b4598671a63e7a03724859c862e1 100644
--- a/chrome/browser/extensions/webstore_installer.cc
+++ b/chrome/browser/extensions/webstore_installer.cc
@@ -4,6 +4,8 @@
 
 #include "chrome/browser/extensions/webstore_installer.h"
 
+#include "base/command_line.h"
+#include "base/stringprintf.h"
 #include "base/string_util.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/extensions/crx_installer.h"
@@ -12,6 +14,7 @@
 #include "chrome/browser/ui/browser_list.h"
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 #include "chrome/common/chrome_notification_types.h"
+#include "chrome/common/chrome_switches.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_constants.h"
 #include "content/browser/tab_contents/navigation_controller.h"
@@ -30,6 +33,13 @@ const char kDefaultInstallSource[] = "";
 
 GURL GetWebstoreInstallURL(
     const std::string& extension_id, const std::string& install_source) {
+  CommandLine* cmd_line = CommandLine::ForCurrentProcess();
+  if (cmd_line->HasSwitch(switches::kAppsGalleryDownloadURL)) {
+    std::string download_url =
+        cmd_line->GetSwitchValueASCII(switches::kAppsGalleryDownloadURL);
+    return GURL(base::StringPrintf(download_url.c_str(),
+                                   extension_id.c_str()));
+  }
   std::vector<std::string> params;
   params.push_back("id=" + extension_id);
   if (!install_source.empty()) {