Add WebstoreInlineInstaller (downloads store data, shows the install UI, and starts the install).

chrome/browser/extensions/extension_install_dialog.cc

Index: chrome/browser/extensions/extension_install_dialog.cc
diff --git a/chrome/browser/extensions/extension_install_dialog.cc b/chrome/browser/extensions/extension_install_dialog.cc
new file mode 100644
index 0000000000000000000000000000000000000000..a58e2595c51a385602fbe2807dc5ea89ab9c502a
--- /dev/null
+++ b/chrome/browser/extensions/extension_install_dialog.cc
@@ -0,0 +1,74 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/extensions/extension_install_dialog.h"
+
+#include "base/file_path.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/values.h"
+#include "chrome/common/extensions/extension.h"
+
+// A flag used for SetExtensionInstallDialogForManifestAutoConfirmForTests
+enum AutoConfirmForTest {
+  DO_NOT_SKIP = 0,
+  PROCEED,
+  ABORT
+};
+AutoConfirmForTest auto_confirm_for_tests = DO_NOT_SKIP;
+
+void ShowExtensionInstallDialogForManifest(
+    Profile *profile,
+    ExtensionInstallUI::Delegate* delegate,
+    const DictionaryValue* manifest,
+    const std::string& id,
+    const std::string& localized_name,
+    SkBitmap* icon,
+    ExtensionInstallUI::PromptType type,
+    scoped_refptr<Extension>* dummy_extension) {
+  scoped_ptr<DictionaryValue> localized_manifest;
+  if (!localized_name.empty()) {
+    localized_manifest.reset(manifest->DeepCopy());
+    localized_manifest->SetString(extension_manifest_keys::kName,
+                                  localized_name);
+  }
+
+  std::string init_errors;
+  *dummy_extension = Extension::CreateWithId(
+      FilePath(),
+      Extension::INTERNAL,
+      localized_manifest.get() ? *localized_manifest.get() : *manifest,
+      Extension::NO_FLAGS,
+      id,
+      &init_errors);
+  if (!dummy_extension->get()) {
+    return;
+  }
+
+  if (icon->empty())
+    icon = const_cast<SkBitmap*>(&Extension::GetDefaultIcon(
+        (*dummy_extension)->is_app()));
+
+  // In tests, we may have setup to proceed or abort without putting up the real
+  // confirmation dialog.
+  if (auto_confirm_for_tests != DO_NOT_SKIP) {
+    if (auto_confirm_for_tests == PROCEED)
+      delegate->InstallUIProceed();
+    else
+      delegate->InstallUIAbort(true);
+    return;
+  }
+
+  ShowExtensionInstallDialog(profile,
+                             delegate,
+                             dummy_extension->get(),
+                             icon,
+                             (*dummy_extension)->GetPermissionMessageStrings(),
+                             ExtensionInstallUI::INSTALL_PROMPT);
+  return;
+}
+
+void SetExtensionInstallDialogForManifestAutoConfirmForTests(
+    bool should_proceed) {
+  auto_confirm_for_tests = should_proceed ? PROCEED : ABORT;
+}