commit 343f4144bee5ddde5efec1e1217403b444386cb4
author Sebastian Jansson <srte@webrtc.org> Fri Oct 05 17:44:46 2018
committer Commit Bot <commit-bot@chromium.org> Sat Oct 06 15:32:04 2018
tree 301f4a25568fffe2e63221fa256409c50b9c4fef
parent e53341c1dc6ebf11fc879dfe914a0eb31c29ca7c

Allows copy and assignment of field trial parameters.

Bug: webrtc:9346
Change-Id: I7734fbe60f95e554a636946cadc1940a78419951
Reviewed-on: https://webrtc-review.googlesource.com/c/104020
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Commit-Queue: Sebastian Jansson <srte@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#25031}

rtc_base/experiments/field_trial_parser.h

diff --git a/rtc_base/experiments/field_trial_parser.h b/rtc_base/experiments/field_trial_parser.h
index c743bb0..22a8889 100644
--- a/rtc_base/experiments/field_trial_parser.h
+++ b/rtc_base/experiments/field_trial_parser.h
@@ -37,6 +37,10 @@
   virtual ~FieldTrialParameterInterface();
 
  protected:
+  // Protected to allow implementations to provide assignment and copy.
+  FieldTrialParameterInterface(const FieldTrialParameterInterface&) = default;
+  FieldTrialParameterInterface& operator=(const FieldTrialParameterInterface&) =
+      default;
   explicit FieldTrialParameterInterface(std::string key);
   friend void ParseFieldTrial(
       std::initializer_list<FieldTrialParameterInterface*> fields,
@@ -46,7 +50,7 @@
   std::string Key() const;
 
  private:
-  const std::string key_;
+  std::string key_;
   bool used_ = false;
 };