Add autoresize capability for Chromium.

Source/WebKit/chromium/src/WebViewImpl.h

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 156 matching lines @@
     virtual void setPageScaleFactorLimits(float minPageScale, float maxPageScale);
     virtual float minimumPageScaleFactor() const;
     virtual float maximumPageScaleFactor() const;
 
     virtual float deviceScaleFactor() const;
     virtual void setDeviceScaleFactor(float);
     virtual bool isFixedLayoutModeEnabled() const;
     virtual void enableFixedLayoutMode(bool enable);
     virtual WebSize fixedLayoutSize() const;
     virtual void setFixedLayoutSize(const WebSize&);
+    virtual void enableAutoSizeMode(
+        bool enable,
+        const WebSize& minSize,
+        const WebSize& maxSize);
     virtual void performMediaPlayerAction(
         const WebMediaPlayerAction& action,
         const WebPoint& location);
     virtual void copyImageAt(const WebPoint& point);
     virtual void dragSourceEndedAt(
         const WebPoint& clientPoint,
         const WebPoint& screenPoint,
         WebDragOperation operation);
     virtual void dragSourceMovedTo(
         const WebPoint& clientPoint,
@@ skipping 127 matching lines @@
     // wParam, LPARAM lParam) in webkit\webkit\win\WebView.cpp. The only
     // significant change in this function is the code to convert from a
     // Keyboard event to the Right Mouse button down event.
     bool sendContextMenuEvent(const WebKeyboardEvent&);
 
     // Notifies the WebView that a load has been committed. isNewNavigation
     // will be true if a new session history item should be created for that
     // load.
     void didCommitLoad(bool* isNewNavigation);
 
+    // Notifies the WebView that layout is happening but the scollbar state
+    // hasn't been updated yet.
+    void layoutBeforeScrollbarUpdate();
+
+    // Indicates two things:
+    //   1) This frame may have a new layout now.
+    //   2) Calling layout() is a no-op.
+    // After calling WebWidget::layout(), expect to get this notification
+    // for each frame unless the frame did not need a layout.
+    void didUpdateLayout(WebFrameImpl*);
+
     // Returns true if popup menus should be rendered by the browser, false if
     // they should be rendered by WebKit (which is the default).
     static bool useExternalPopupMenus();
 
     bool contextMenuAllowed() const
     {
         return m_contextMenuAllowed;
     }
 
     // Set the disposition for how this webview is to be initially shown.
@@ skipping 148 matching lines @@
     WebPermissionClient* m_permissionClient;
     WebSpellCheckClient* m_spellCheckClient;
 
     ChromeClientImpl m_chromeClientImpl;
     ContextMenuClientImpl m_contextMenuClientImpl;
     DragClientImpl m_dragClientImpl;
     EditorClientImpl m_editorClientImpl;
     InspectorClientImpl m_inspectorClientImpl;
 
     WebSize m_size;
+    // If true, automatically resize the render view around its content.
+    bool m_autoSize;
+    bool m_inLayoutBeforeScrollbarUpdate;
+    // The last size sent out to the WebViewClient about an autosize change.
+    WebSize m_lastAutoSize;
+    // The lower bound on the size when autosizing.
+    WebSize m_minAutoSize;
+    // The upper bound on the size when autosizing.
+    WebSize m_maxAutoSize;
 
     WebPoint m_lastMousePosition;
     OwnPtr<WebCore::Page> m_page;
 
     // This flag is set when a new navigation is detected. It is used to satisfy
     // the corresponding argument to WebFrameClient::didCommitProvisionalLoad.
     bool m_observedNewNavigation;
 #ifndef NDEBUG
     // Used to assert that the new navigation we observed is the same navigation
     // when we make use of m_observedNewNavigation.
@@ skipping 121 matching lines @@
     OwnPtr<GeolocationClientProxy> m_geolocationClientProxy;
 
 #if ENABLE(GESTURE_RECOGNIZER)
     OwnPtr<WebCore::PlatformGestureRecognizer> m_gestureRecognizer;
 #endif
 };
 
 } // namespace WebKit
 
 #endif