Extract content dependency from keyboard code

ui/keyboard/keyboard_controller_proxy.h

-// Copyright (c) 2013 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 UI_KEYBOARD_KEYBOARD_CONTROLLER_PROXY_H_
-#define UI_KEYBOARD_KEYBOARD_CONTROLLER_PROXY_H_
-
-#include "base/memory/scoped_ptr.h"
-#include "content/public/common/media_stream_request.h"
-#include "ui/aura/window_observer.h"
-#include "ui/base/ime/text_input_type.h"
-#include "ui/keyboard/keyboard_export.h"
-
-namespace aura {
-class Window;
-}
-namespace content {
-class BrowserContext;
-class SiteInstance;
-class WebContents;
-}
-namespace gfx {
-class Rect;
-}
-namespace ui {
-class InputMethod;
-}
-namespace wm {
-class Shadow;
-}
-
-namespace keyboard {
-
-class KeyboardController;
-
-// A proxy used by the KeyboardController to get access to the virtual
-// keyboard window.
-class KEYBOARD_EXPORT KeyboardControllerProxy : public aura::WindowObserver {
- public:
-  class TestApi {
-   public:
-    explicit TestApi(KeyboardControllerProxy* proxy) : proxy_(proxy) {}
-
-    const content::WebContents* keyboard_contents() {
-      return proxy_->keyboard_contents_.get();
-    }
-
-   private:
-    KeyboardControllerProxy* proxy_;
-
-    DISALLOW_COPY_AND_ASSIGN(TestApi);
-  };
-
-  explicit KeyboardControllerProxy(content::BrowserContext* context);
-  ~KeyboardControllerProxy() override;
-
-  // Gets the virtual keyboard window.  Ownership of the returned Window remains
-  // with the proxy.
-  virtual aura::Window* GetKeyboardWindow();
-
-  // Whether the keyboard window is created. The keyboard window is tied to a
-  // WebContent so we can just check if the WebContent is created or not.
-  virtual bool HasKeyboardWindow() const;
-
-  // Gets the InputMethod that will provide notifications about changes in the
-  // text input context.
-  virtual ui::InputMethod* GetInputMethod() = 0;
-
-  // Requests the audio input from microphone for speech input.
-  virtual void RequestAudioInput(content::WebContents* web_contents,
-      const content::MediaStreamRequest& request,
-      const content::MediaResponseCallback& callback) = 0;
-
-  // Shows the container window of the keyboard. The default implementation
-  // simply shows the container. An overridden implementation can set up
-  // necessary animation, or delay the visibility change as it desires.
-  virtual void ShowKeyboardContainer(aura::Window* container);
-
-  // Hides the container window of the keyboard. The default implementation
-  // simply hides the container. An overridden implementation can set up
-  // necesasry animation, or delay the visibility change as it desires.
-  virtual void HideKeyboardContainer(aura::Window* container);
-
-  // Updates the type of the focused text input box.
-  virtual void SetUpdateInputType(ui::TextInputType type);
-
-  // Ensures caret in current work area (not occluded by virtual keyboard
-  // window).
-  virtual void EnsureCaretInWorkArea();
-
-  // Loads system virtual keyboard. Noop if the current virtual keyboard is
-  // system virtual keyboard.
-  virtual void LoadSystemKeyboard();
-
-  // Reloads virtual keyboard URL if the current keyboard's web content URL is
-  // different. The URL can be different if user switch from password field to
-  // any other type input field.
-  // At password field, the system virtual keyboard is forced to load even if
-  // the current IME provides a customized virtual keyboard. This is needed to
-  // prevent IME virtual keyboard logging user's password. Once user switch to
-  // other input fields, the virtual keyboard should switch back to the IME
-  // provided keyboard, or keep using the system virtual keyboard if IME doesn't
-  // provide one.
-  virtual void ReloadKeyboardIfNeeded();
-
-  // KeyboardController owns KeyboardControllerProxy so KeyboardControllerProxy
-  // or its subclasses should not take ownership of the |controller|.
-  // |controller| can be null when KeyboardController is destroying.
-  virtual void SetController(KeyboardController* controller);
-
- protected:
-  // The implementation can choose to setup the WebContents before the virtual
-  // keyboard page is loaded (e.g. install a WebContentsObserver).
-  // SetupWebContents() is called right after creating the WebContents, before
-  // loading the keyboard page.
-  virtual void SetupWebContents(content::WebContents* contents);
-
-  // aura::WindowObserver overrides:
-  void OnWindowBoundsChanged(aura::Window* window,
-                             const gfx::Rect& old_bounds,
-                             const gfx::Rect& new_bounds) override;
-  void OnWindowDestroyed(aura::Window* window) override;
-
-  content::BrowserContext* browser_context() { return browser_context_; }
-  KeyboardController* keyboard_controller() { return keyboard_controller_; }
-
- private:
-  friend class TestApi;
-
-  // Loads the web contents for the given |url|.
-  void LoadContents(const GURL& url);
-
-  // Gets the virtual keyboard URL (either the default URL or IME override URL).
-  const GURL& GetVirtualKeyboardUrl();
-
-  // The BrowserContext to use for creating the WebContents hosting the
-  // keyboard.
-  content::BrowserContext* browser_context_;
-
-  const GURL default_url_;
-  keyboard::KeyboardController* keyboard_controller_;
-
-  scoped_ptr<content::WebContents> keyboard_contents_;
-  scoped_ptr<wm::Shadow> shadow_;
-
-  DISALLOW_COPY_AND_ASSIGN(KeyboardControllerProxy);
-};
-
-}  // namespace keyboard
-
-#endif  // UI_KEYBOARD_KEYBOARD_CONTROLLER_PROXY_H_