[profile] Update counter offset to account for binary ids

[phosek]

Summary

In the raw profile, binary ids immediately follow the header so when
computing counters offset we need to account for the new section.

compiler-rt/lib/profile/InstrProfilingFile.c

if (UseBiasVar) {
       /* Map the profile. */
       char *Profile = (char *)mmap(NULL, FileSize, PROT_READ | PROT_WRITE,
                                    MmapFlags, Fileno, 0);
       if (Profile == MAP_FAILED) {
         PROF_ERR("Unable to mmap profile: %s\n", strerror(errno));
         return;
       }
       const uint64_t CountersOffsetInBiasMode =
-          sizeof(__llvm_profile_header) +
+          sizeof(__llvm_profile_header) + __llvm_write_binary_ids(NULL) +
           (DataSize * sizeof(__llvm_profile_data));
       /* Update the profile fields based on the current mapping. */
       INSTR_PROF_PROFILE_COUNTER_BIAS_VAR = (intptr_t)Profile -
                                             (uintptr_t)CountersBegin +
                                             CountersOffsetInBiasMode;
 
       /* Return the memory allocated for counters to OS. */
       lprofReleaseMemoryPagesToOS((uintptr_t)CountersBegin,

compiler-rt/lib/profile/InstrProfilingPlatformFuchsia.c

void __llvm_profile_initialize(void) {
   }
 
   const __llvm_profile_data *DataBegin = __llvm_profile_begin_data();
   const __llvm_profile_data *DataEnd = __llvm_profile_end_data();
   const uint64_t *CountersBegin = __llvm_profile_begin_counters();
   const uint64_t *CountersEnd = __llvm_profile_end_counters();
   const uint64_t DataSize = __llvm_profile_get_data_size(DataBegin, DataEnd);
   const uint64_t CountersOffset =
-      sizeof(__llvm_profile_header) + (DataSize * sizeof(__llvm_profile_data));
+      sizeof(__llvm_profile_header) + __llvm_write_binary_ids(NULL) +
+      (DataSize * sizeof(__llvm_profile_data));
   uint64_t CountersSize = CountersEnd - CountersBegin;
 
   /* Don't publish a VMO if there are no counters. */
   if (!CountersSize)
     return;
 
   zx_status_t Status;