ui: Cleanup class/struct forward declarations

chrome/browser/component_updater/pnacl_component_installer.cc

Index: chrome/browser/component_updater/pnacl_component_installer.cc
diff --git a/chrome/browser/component_updater/pnacl_component_installer.cc b/chrome/browser/component_updater/pnacl_component_installer.cc
index 523995996a46ec7e53c72805f7b066f6ae8ef538..8e46bbd0a5da875a2ea59922cd96b5966b62b206 100644
--- a/chrome/browser/component_updater/pnacl_component_installer.cc
+++ b/chrome/browser/component_updater/pnacl_component_installer.cc
@@ -11,6 +11,7 @@
 #include "base/atomicops.h"
 #include "base/base_paths.h"
 #include "base/bind.h"
+#include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/files/file_enumerator.h"
 #include "base/files/file_path.h"
@@ -29,6 +30,7 @@
 #include "components/component_updater/component_updater_service.h"
 #include "components/nacl/common/nacl_switches.h"
 #include "components/update_client/update_query_params.h"
+#include "components/update_client/utils.h"
 #include "content/public/browser/browser_thread.h"
 
 using content::BrowserThread;
@@ -225,8 +227,16 @@ base::FilePath PnaclComponentInstaller::GetPnaclBaseDirectory() {
   return result;
 }
 
-bool PnaclComponentInstaller::Install(const base::DictionaryValue& manifest,
-                                      const base::FilePath& unpack_path) {
+update_client::CrxInstaller::Result PnaclComponentInstaller::Install(
+    const base::DictionaryValue& manifest,
+    const base::FilePath& unpack_path) {
+  return update_client::InstallFunctionWrapper(
+      base::Bind(&PnaclComponentInstaller::DoInstall, base::Unretained(this),
+                 base::ConstRef(manifest), base::ConstRef(unpack_path)));
+}
+
+bool PnaclComponentInstaller::DoInstall(const base::DictionaryValue& manifest,
+                                        const base::FilePath& unpack_path) {
   std::unique_ptr<base::DictionaryValue> pnacl_manifest(
       ReadPnaclManifest(unpack_path));
   if (pnacl_manifest == NULL) {