Merge to XFA: Pass IJS_Runtime, not IJS_Context, to native object constructors. Original Review URL: https://codereview.chromium.org/1389163007 . (cherry picked from commit 848a13b6777cbff8cc4aea3ab3d69eaa0b82ae6c) Merge conflics in: fpdfsdk/src/javascript/JS_Runtime.cpp fpdfsdk/src/javascript/JS_Runtime_Stub.cpp fpdfsdk/src/jsapi/fxjs_v8.cpp R=thestig@chromium.org Review URL: https://codereview.chromium.org/1394993006 .