extensions: Extract the dependency on browser_view from extension_input_api.cc.

chrome/browser/ui/top_level_widget.h

Index: chrome/browser/ui/top_level_widget.h
diff --git a/chrome/browser/ui/top_level_widget.h b/chrome/browser/ui/top_level_widget.h
new file mode 100644
index 0000000000000000000000000000000000000000..df9b2c2d4362b2adff3823120ce4359d8bec9a61
--- /dev/null
+++ b/chrome/browser/ui/top_level_widget.h
@@ -0,0 +1,20 @@
+// Copyright (c) 2012 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.
+
+#ifndef CHROME_BROWSER_UI_TOP_LEVEL_WIDGET_H_
+#define CHROME_BROWSER_UI_TOP_LEVEL_WIDGET_H_
+
+class Browser;
+
+namespace views {
+class Widget;
+}
+
+namespace chrome {
+
+views::Widget* GetTopLevelWidgetForBrowser(Browser* browser);
+
+}  // namespace chrome
+
+#endif  // CHROME_BROWSER_UI_TOP_LEVEL_WIDGET_H_