Default why can't I build for hammerhead?

Did a repo sync yesterday and tried to brunch hammerhead but this is what I got back...
external/chromium_org/third_party/WebKit/Source/bindings/v8/custom/V8DocumentCustom.cpp:61:86: error: no 'void WebCore::V8Document::evaluateMethodCustom(const v8::FunctionCallbackInfo<v8::Value>&)' member function declared in class 'WebCore::V8Document'
make: *** [/home/mark/Source/omni/out/target/product/hammerhead/obj/STATIC_LIBRARIES/third_party_WebKit_Source_core_webcore_derived_gyp _intermediates/third_party/WebKit/Source/bindings/v8/custom/V8DocumentCustom.o] error 1

Can someone help me?
Device:...:Nexus 5 A.K.A Hammerhead
ROM......:OwnROM
Kernel....:FrancoKernel r59
Recovery:CWM 6.0.5.0
Site:.......:OwnDroid.nl



Projects:
OwnROM
OwnDroid G-Apps

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