Add autoresize capability for Chromium.

Source/WebKit/chromium/src/WebViewImpl.h

Index: Source/WebKit/chromium/src/WebViewImpl.h
diff --git a/Source/WebKit/chromium/src/WebViewImpl.h b/Source/WebKit/chromium/src/WebViewImpl.h
index 5cb0a9c35004aee0c7518dd2ec91c3c75dcdb696..cc2d708846a5aedf52ed4a68e0882f217649579b 100644
--- a/Source/WebKit/chromium/src/WebViewImpl.h
+++ b/Source/WebKit/chromium/src/WebViewImpl.h
@@ -174,6 +174,10 @@ public:
     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);
@@ -321,6 +325,17 @@ public:
     // 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();
@@ -489,6 +504,15 @@ private:
     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;