Stack sampling profiler: remove RUNTIME_FUNCTION sanity check

chrome/browser/stack_sampling_configuration.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/stack_sampling_configuration.h"
 
 #include "base/rand_util.h"
 #include "chrome/browser/metrics/chrome_metrics_service_accessor.h"
 #include "chrome/common/channel_info.h"
 #include "components/version_info/version_info.h"
@@ skipping 115 matching lines @@
   // Enable according to the variations below in canary and dev.
   if (chrome::GetChannel() == version_info::Channel::CANARY ||
       chrome::GetChannel() == version_info::Channel::DEV) {
     struct Variation {
       ProfileConfiguration config;
       int weight;
     };
 
     // Generate a configuration according to the associated weights.
     const Variation variations[] = {
-      { PROFILE_10HZ, 50},
-      { PROFILE_CONTROL, 50},
-      { PROFILE_DISABLED, 0}
+      { PROFILE_10HZ, 15},
+      { PROFILE_CONTROL, 15},
+      { PROFILE_DISABLED, 70}
     };
 
     int total_weight = 0;
     for (const Variation& variation : variations)
       total_weight += variation.weight;
     DCHECK_EQ(100, total_weight);
 
     int chosen = base::RandInt(0, total_weight - 1);  // Max is inclusive.
     int cumulative_weight = 0;
     for (const Variation& variation : variations) {
       if (chosen >= cumulative_weight &&
           chosen < cumulative_weight + variation.weight) {
         return variation.config;
       }
       cumulative_weight += variation.weight;
     }
     NOTREACHED();
   }
 
   return PROFILE_DISABLED;
 }