Tag all tracked objects, including Tasks, with the program counter at the site of FROM_HERE.
This is to make it easier to determine the site Tasks are posted from in release builds, especially when only a minidump is available. It should help diagnose http://crbug.com/81499.
I added a debug function to alias variables so that the optimizer will not strip them out if they are not live.
The semantics of the MessageLoop::PostTask functions is changed and it is wrong but I am not sure what semantics are intended. It seems location information was no longer being tracked for Tasks wrapped as Closures and I don't know if this was intended. PTAL. Update: this has since been fixed.
TEST=Set breakpoint in TaskClosureAdapter::Run and very that the post site can be located in an optimized build.
BUG=81499
Review URL: http://codereview.chromium.org/7039020
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@85991 0039d316-1c4b-4281-b951-d872f2087c98
9 files changed
