Revert of Collect information about failing histogram factory calls.

base/metrics/metrics_hashes.cc

Index: base/metrics/metrics_hashes.cc
diff --git a/base/metrics/metrics_hashes.cc b/base/metrics/metrics_hashes.cc
index 54c117bef754636b81e166179350a850f758bb7e..5672b06decb2ef2aa51efb5b705692ceaaf4794e 100644
--- a/base/metrics/metrics_hashes.cc
+++ b/base/metrics/metrics_hashes.cc
@@ -4,7 +4,6 @@
 
 #include "base/metrics/metrics_hashes.h"
 
-#include "base/debug/alias.h"
 #include "base/logging.h"
 #include "base/md5.h"
 #include "base/sys_byteorder.h"
@@ -16,14 +15,9 @@
 // Converts the 8-byte prefix of an MD5 hash into a uint64_t value.
 inline uint64_t DigestToUInt64(const base::MD5Digest& digest) {
   uint64_t value;
-  CHECK_GE(sizeof(digest.a), sizeof(value));
+  DCHECK_GE(sizeof(digest.a), sizeof(value));
   memcpy(&value, digest.a, sizeof(value));
-  uint64_t hash = base::NetToHost64(value);
-  CHECK_NE(0U, hash);
-  base::debug::Alias(&hash);
-  base::debug::Alias(&value);
-  base::debug::Alias(&digest);
-  return hash;
+  return base::NetToHost64(value);
 }
 
 }  // namespace