chrome: Cleanup class/struct forward declarations

chrome/browser/ui/android/bluetooth_chooser_android.h

 // Copyright 2015 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_ANDROID_BLUETOOTH_CHOOSER_ANDROID_H_
 #define CHROME_BROWSER_UI_ANDROID_BLUETOOTH_CHOOSER_ANDROID_H_
 
 #include "base/android/scoped_java_ref.h"
 #include "content/public/browser/bluetooth_chooser.h"
 #include "content/public/browser/web_contents.h"
 
-namespace url {
-class Origin;
-}
-
 // Represents a way to ask the user to select a Bluetooth device from a list of
 // options.
 class BluetoothChooserAndroid : public content::BluetoothChooser {
  public:
   // Both frame and event_handler must outlive the BluetoothChooserAndroid.
   BluetoothChooserAndroid(content::RenderFrameHost* frame,
                           const EventHandler& event_handler);
   ~BluetoothChooserAndroid() override;
 
   // content::BluetoothChooser:
@@ skipping 33 matching lines @@
 
  private:
   void OpenURL(const char* url);
   base::android::ScopedJavaGlobalRef<jobject> java_dialog_;
 
   content::WebContents* web_contents_;
   BluetoothChooser::EventHandler event_handler_;
 };
 
 #endif  // CHROME_BROWSER_UI_ANDROID_BLUETOOTH_CHOOSER_ANDROID_H_