Hi all ,my question is :
   In android 4.0 webkit,there is a FrameCache Mechanism.
    I have found that when a webkit is rendering a webpae,it would call 
updateFrameCache method at the RecordPictureSet method of WebViewCore.cpp.
    But when the web page is Complex,the updateFrameCache will reduce 
the rendering performance because it has record pictureset for twice.
    so,I want to remove this Mechanism,can someone tell me What is the 
impact?In other words,what is the purporse of the FrameCache?
                                                                            
                                                                            
                          In any case,thank you very much!                  

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