MIPS: Move the receiver into r0 for PatchGlobalProxy.

Port r18327 (372ee171)

Original commit message:
This fixes the ARM/android bug http://build.chromium.org/p/tryserver.chromium/builders/android_dbg_triggered_tests/builds/112686/steps/androidwebview_instrumentation_tests

BUG=
R=plind44@gmail.com

Review URL: https://codereview.chromium.org/107483005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@18328 ce2b1a6d-e550-0410-aec6-3dcde31c8c00