WebView Draw

steps

1.FrameLoader.cpp
didFirstLayout
3.FrameLoaderClientAndroid.cpp
dispatchDidFirstLayout
3.WebViewCore.cpp
didFirstLayout();
4.WebViewCore.java// will also call setupViewport()
didFirstLayout();
5.BrowserFrame.java
didFirstLayout();
6.WebViewCore.java
contentDraw();
7.WebViewCore.java
webkitDrawLayers();
webkitDraw(draw);
webkitDraw();
8.WebView.PrivateHandler.handleMessage()
case=NEW_PICTURE_MSG_ID

 

（unfinished）