Unbreak samples and tools.

Removed a related TODO in d8.cc on the way.

BUG=v8::3318
LOG=y
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/275463002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21195 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Fix index register assignment in LoadFieldByIndex for arm, arm64, and mips.

This instruciton clobbers the index register.

BUG=368243
LOG=N
TEST=mjsunit/regress/regress-368243
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/269273003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21196 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Harden yet more runtime functions

R=dslomov@chromium.org

Review URL: https://codereview.chromium.org/270273005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21197 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
DevTools: Unflake test-cpu-profiler/JsNativeJsRuntimeJsSample

BUG=v8:3308
LOG=N
R=bmeurer@chromium.org, jochen@chromium.org, yurys@chromium.org

Review URL: https://codereview.chromium.org/271683002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21198 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Merge remote-tracking branch 'upstream/bleeding_edge' into bleeding_edge