The parent and content processes can have different temp directories
when sandboxing is enabled, so the process that creates the file for a
heap snapshot must also determine the snapshot ID.
MozReview-Commit-ID: 2UuncT54NXc
Move major DevTools files to new directories using the following steps:
hg mv browser/devtools devtools/client
hg mv toolkit/devtools/server devtools/server
hg mv toolkit/devtools devtools/shared
No other changes are made.