Implement gallery install API

chrome/browser/extensions/extension_webstore_private_api.cc

Index: chrome/browser/extensions/extension_webstore_private_api.cc
diff --git a/chrome/browser/extensions/extension_webstore_private_api.cc b/chrome/browser/extensions/extension_webstore_private_api.cc
index 536008c3cfeb68493830725a8d56256285387347..184c9e53590faf6334b492bedab0a608ddc21dd8 100644
--- a/chrome/browser/extensions/extension_webstore_private_api.cc
+++ b/chrome/browser/extensions/extension_webstore_private_api.cc
@@ -4,17 +4,72 @@
 
 #include "chrome/browser/extensions/extension_webstore_private_api.h"
 
+#include "base/string_util.h"
 #include "base/values.h"
+#include "chrome/browser/browser_process.h"
+#include "chrome/browser/extensions/crx_installer.h"
 #include "chrome/browser/extensions/extension_prefs.h"
 #include "chrome/browser/extensions/extensions_service.h"
 #include "chrome/browser/sync/profile_sync_service.h"
+#include "chrome/browser/tab_contents/tab_contents.h"
+#include "chrome/common/extensions/extension_constants.h"
+#include "net/base/escape.h"
+
+namespace {
+
+const char* install_base_url = extension_urls::kGalleryUpdateHttpsUrl;
+
+}
 
 static bool IsWebStoreURL(const GURL& url) {
   GURL store_url(Extension::ChromeStoreURL());
   if (!url.is_valid() || !store_url.is_valid()) {
     return false;
   }
-  return store_url.GetOrigin() == url.GetOrigin();
+
+  // Ignore port. It may be set on |url| during tests, but cannot be set on
+  // ChromeStoreURL.
+  return store_url.scheme() == url.scheme() &&
+         store_url.host() == url.host();
+}
+
+// static
+void InstallFunction::SetTestingInstallBaseUrl(
+    const char* testing_install_base_url) {
+  install_base_url = testing_install_base_url;
+}
+
+bool InstallFunction::RunImpl() {
+  if (!IsWebStoreURL(source_url()))
+    return false;
+
+  std::string id;
+  EXTENSION_FUNCTION_VALIDATE(args_->GetString(0, &id));
+  EXTENSION_FUNCTION_VALIDATE(Extension::IdIsValid(id));
+
+  std::vector<std::string> params;
+  params.push_back("id=" + id);
+  params.push_back("lang=" + g_browser_process->GetApplicationLocale());
+  params.push_back("uc");
+  std::string url_string = install_base_url;
+
+  GURL url(url_string + "?response=redirect&x=" +
+      EscapeQueryParamValue(JoinString(params, '&'), true));
+  DCHECK(url.is_valid());
+
+  // Cleared in ~CrxInstaller().
+  CrxInstaller::SetWhitelistedInstallId(id);
+
+  // The download url for the given |id| is now contained in |url|. We
+  // navigate the current (calling) tab to this url which will result in a
+  // download starting. Once completed it will go through the normal extension
+  // install flow. The above call to SetWhitelistedInstallId will bypass the
+  // normal permissions install dialog.
+  NavigationController& controller =
+      dispatcher()->delegate()->associated_tab_contents()->controller();
+  controller.LoadURL(url, source_url(), PageTransition::LINK);
+
+  return true;
 }
 
 bool GetSyncLoginFunction::RunImpl() {