Set the VMA address in linux perf records

Set the VMA address for jitted code to the address of the code. This
should be the correct value, as the code got loaded to that address at
runtime.

Change-Id: I6ce9181d940dd4568d93a92e98d206f3c6546ebc
Reviewed-on: https://chromium-review.googlesource.com/915923Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Stephan Herhut <herhut@chromium.org>
Cr-Commit-Position: refs/heads/master@{#51367}

src/perf-jit.cc

@@ -236,7 +236,7 @@ void PerfJitLogger::LogRecordedBuffer(AbstractCode* abstract_code,
   code_load.process_id_ =
       static_cast<uint32_t>(base::OS::GetCurrentProcessId());
   code_load.thread_id_ = static_cast<uint32_t>(base::OS::GetCurrentThreadId());
-  code_load.vma_ = 0x0;  //  Our addresses are absolute.
+  code_load.vma_ = reinterpret_cast<uint64_t>(code_pointer);
   code_load.code_address_ = reinterpret_cast<uint64_t>(code_pointer);
   code_load.code_size_ = code_size;
   code_load.code_id_ = code_index_;