Add autoresize capability for Chromium.

Source/WebKit/chromium/public/WebViewClient.h

Index: Source/WebKit/chromium/public/WebViewClient.h
diff --git a/Source/WebKit/chromium/public/WebViewClient.h b/Source/WebKit/chromium/public/WebViewClient.h
index 62c7b4d49d7f73ad88b69e78e7bbd3d14bd9a695..bad084066786a837fc6868e81f725ec16ae8689b 100644
--- a/Source/WebKit/chromium/public/WebViewClient.h
+++ b/Source/WebKit/chromium/public/WebViewClient.h
@@ -73,6 +73,7 @@ struct WebConsoleMessage;
 struct WebContextMenuData;
 struct WebPoint;
 struct WebPopupMenuInfo;
+struct WebSize;
 struct WebWindowFeatures;
 
 // Since a WebView is a WebWidget, a WebViewClient is a WebWidgetClient.
@@ -246,6 +247,16 @@ public:
 
     virtual void numberOfWheelEventHandlersChanged(unsigned) { }
 
+    // Call when the size of the view automatically changed.
+    virtual void autoSizeChanged(const WebSize&) { }
+
+    // Indicates two things:
+    //   1) The view may have a new layout now.
+    //   2) Calling layout() is a no-op.
+    // After calling WebView::layout(), expect to get this notification
+    // for the view unless the view did not need a layout.
+    virtual void didUpdateLayout() { }
+
     // Session history -----------------------------------------------------
 
     // Tells the embedder to navigate back or forward in session history by