Add a private API method to install a webstore app from Files.app

chrome/browser/chromeos/extensions/file_manager/private_api_misc.cc

Index: chrome/browser/chromeos/extensions/file_manager/private_api_misc.cc
diff --git a/chrome/browser/chromeos/extensions/file_manager/private_api_misc.cc b/chrome/browser/chromeos/extensions/file_manager/private_api_misc.cc
index 115b18cd4cf85a81f80927ccf4c8fe227565d18e..75ae01aeef435909f89a4484befd23c967eefe0c 100644
--- a/chrome/browser/chromeos/extensions/file_manager/private_api_misc.cc
+++ b/chrome/browser/chromeos/extensions/file_manager/private_api_misc.cc
@@ -10,6 +10,7 @@
 #include "chrome/browser/chromeos/drive/drive_integration_service.h"
 #include "chrome/browser/chromeos/drive/logging.h"
 #include "chrome/browser/chromeos/extensions/file_manager/private_api_util.h"
+#include "chrome/browser/chromeos/extensions/file_manager/webstore_app_installer.h"
 #include "chrome/browser/chromeos/settings/cros_settings.h"
 #include "chrome/browser/lifetime/application_lifetime.h"
 #include "chrome/browser/profiles/profile.h"
@@ -201,4 +202,58 @@ bool ZoomFunction::RunImpl() {
   return true;
 }
 
+InstallWebstoreAppFunction::InstallWebstoreAppFunction() {
+}
+
+InstallWebstoreAppFunction::~InstallWebstoreAppFunction() {
+}
+
+bool InstallWebstoreAppFunction::RunImpl() {
+  if (args_->GetSize() < 1) {
+    return false;
+  }
+
+  if (!args_->GetString(0, &webstore_item_id_) || webstore_item_id_.empty())
+    return false;
+
+  extensions::WebstoreStandaloneInstaller::Callback callback =
+      base::Bind(&InstallWebstoreAppFunction::OnInstallComplete,
+                 base::Unretained(this));
+
+  scoped_refptr<WebstoreAppInstaller> installer(
+      new WebstoreAppInstaller(
+          GetAssociatedWebContents(),  // web_contents(),
+          webstore_item_id_,
+          profile(),
+          callback));
+  // installer will be AddRef()'d in BeginInstall().
+  installer->BeginInstall();
+
+  AddRef();  // Balanced in Release() in OnInstallComplete.
+  return true;
+}
+
+void InstallWebstoreAppFunction::OnInstallComplete(bool success,
+                                                   const std::string& error) {
+  scoped_ptr<DictionaryValue> result(new DictionaryValue());
+  result->SetBoolean("result", success);
+  result->SetString("error", error);
+
+  if (success) {
+    drive::util::Log(logging::LOG_INFO,
+                     "App install succeeded. (item id: %s)",
+                     webstore_item_id_.c_str());
+  } else {
+    drive::util::Log(logging::LOG_ERROR,
+                     "App install failed. (item id: %s, reason: %s)",
+                     webstore_item_id_.c_str(),
+                     error.c_str());
+  }
+
+  SetResult(result.release());
+  SendResponse(success);
+
+  Release();  // Matches the AddRef in RunImpl.
+}
+
 }  // namespace file_manager