base: Remove the string logging from CHECK().

third_party/cacheinvalidation/src/google/cacheinvalidation/impl/exponential-backoff-delay-generator.h

Index: third_party/cacheinvalidation/src/google/cacheinvalidation/impl/exponential-backoff-delay-generator.h
diff --git a/third_party/cacheinvalidation/src/google/cacheinvalidation/impl/exponential-backoff-delay-generator.h b/third_party/cacheinvalidation/src/google/cacheinvalidation/impl/exponential-backoff-delay-generator.h
index cf36a66b14f45437d0d43469cfb3f7bba6b81a9d..b4c15589f9fd2b3a861ed32bea0b8c7273e1e5da 100644
--- a/third_party/cacheinvalidation/src/google/cacheinvalidation/impl/exponential-backoff-delay-generator.h
+++ b/third_party/cacheinvalidation/src/google/cacheinvalidation/impl/exponential-backoff-delay-generator.h
@@ -40,10 +40,11 @@ class ExponentialBackoffDelayGenerator {
                                    int max_exponential_factor) :
     initial_max_delay_(initial_max_delay),
     max_exponential_factor_(max_exponential_factor), random_(random) {
-    CHECK_GT(max_exponential_factor_, 0) << "max factor must be positive";
+    // max factor must be positive
+    CHECK_GT(max_exponential_factor_, 0);
     CHECK(random_ != NULL);
-    CHECK(initial_max_delay > Scheduler::NoDelay()) <<
-        "Initial delay must be positive";
+    // Initial delay must be positive
+    CHECK(initial_max_delay > Scheduler::NoDelay());
     Reset();
   }