Clean libwebkit, libjs and libv8 after WebKit merge.
Clean libwebkit, libjs and libv8 after WebKit merge.

Change-Id: I2bba18843aa31b849de53e047dceb40de5eccc8a

pranav01/platform_manifest,hagar006/platform_manifest,ND-3500/platform_manifest,xorware/android_build,xorware/android_build,xorware/android_build,xorware/android_build,xorware/android_build,knone1/platform_manifest,Hybrid-Power/startsync,RR-msm7x30/platform_manifest,see4ri/lolili,fallouttester/platform_manifest