Stack sampling profiler: increase enable rate to 50%

chrome/browser/stack_sampling_configuration.cc

Index: chrome/browser/stack_sampling_configuration.cc
diff --git a/chrome/browser/stack_sampling_configuration.cc b/chrome/browser/stack_sampling_configuration.cc
index 20c959461f3499998d501e50c95231812b52465d..c5fc88b63c6e5ce7902a23b73d4d5b4e6e4bd1aa 100644
--- a/chrome/browser/stack_sampling_configuration.cc
+++ b/chrome/browser/stack_sampling_configuration.cc
@@ -133,9 +133,9 @@ StackSamplingConfiguration::GenerateConfiguration() {
 
     // Generate a configuration according to the associated weights.
     const Variation variations[] = {
-      { PROFILE_10HZ, 15},
-      { PROFILE_CONTROL, 15},
-      { PROFILE_DISABLED, 70}
+      { PROFILE_10HZ, 50},
+      { PROFILE_CONTROL, 50},
+      { PROFILE_DISABLED, 0}
     };
 
     int total_weight = 0;