Carry the client ID from the database all the way through upload

snapshot/process_snapshot.h

 // Copyright 2014 The Crashpad Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
 #ifndef CRASHPAD_SNAPSHOT_PROCESS_SNAPSHOT_H_
 #define CRASHPAD_SNAPSHOT_PROCESS_SNAPSHOT_H_
 
 #include <sys/time.h>
 #include <sys/types.h>
 
 #include <map>
 #include <string>
 #include <vector>
 
+#include "util/misc/uuid.h"
+
 namespace crashpad {
 
 class ExceptionSnapshot;
 class ModuleSnapshot;
 class SystemSnapshot;
 class ThreadSnapshot;
 
 //! \brief An abstract interface to a snapshot representing the state of a
 //!     process.
 //!
@@ skipping 35 matching lines @@
   //! \brief Returns the snapshot process’ CPU usage times in \a user_time and
   //!     \a system_time.
   //!
   //! \param[out] user_time The time that the process has spent executing in
   //!     user mode.
   //! \param[out] system_time The time that the process has spent executing in
   //!     system (kernel) mode.
   virtual void ProcessCPUTimes(timeval* user_time,
                                timeval* system_time) const = 0;
 
+  //! \brief Returns a %UUID identifying the client that the snapshot
+  //!     represents.
+  //!
+  //! Client identification is within the scope of the application, but it is
+  //! expected that the identifier will be unique for an instance of Crashpad
+  //! monitoring an application or set of applications for a user. The
+  //! identifier shall remain stable over time.
+  //!
+  //! If no identifier is available, this field will contain zeroes.
+  virtual void ClientID(UUID* client_id) const = 0;
+
   //! \brief Returns key-value string annotations recorded for the process,
   //!     system, or snapshot producer.
   //!
   //! This method retrieves annotations recorded for a process. These
   //! annotations are intended for diagnostic use, including crash analysis.
   //! “Simple annotations” are structured as a sequence of key-value pairs,
   //! where all keys and values are strings. These are referred to in Chrome as
   //! “crash keys.”
   //!
   //! Annotations stored here may reflect the process, system, or snapshot
@@ skipping 44 matching lines @@
   //! \return An ExceptionSnapshot object. The caller does not take ownership of
   //!     this object, it is scoped to the lifetime of the ProcessSnapshot
   //!     object that it was obtained from. If the snapshot is not a result of
   //!     an exception, returns `nullptr`.
   virtual const ExceptionSnapshot* Exception() const = 0;
 };
 
 }  // namespace crashpad
 
 #endif  // CRASHPAD_SNAPSHOT_PROCESS_SNAPSHOT_H_