Merge pull request #47 from rauls5382/mutex

Add new Contention entry points

profile/legacy_profile.go

 	`(base::)?RecordLockProfileData.*`,
 	`(base::)?SubmitMutexProfileData.*`,
 	`(base::)?SubmitSpinLockProfileData.*`,
+	`(base::Mutex::)?AwaitCommon.*`,
+	`(base::Mutex::)?Unlock.*`,
+	`(base::Mutex::)?UnlockSlow.*`,
+	`(base::Mutex::)?ReaderUnlock.*`,
+	`(base::MutexLock::)?~MutexLock.*`,
 	`(Mutex::)?AwaitCommon.*`,
 	`(Mutex::)?Unlock.*`,
 	`(Mutex::)?UnlockSlow.*`,