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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 //
      5 // Protocol buffer for Chrome UMA (User Metrics Analysis).
      6 
      7 syntax = "proto2";
      8 
      9 option optimize_for = LITE_RUNTIME;
     10 
     11 package metrics;
     12 
     13 import "histogram_event.proto";
     14 import "omnibox_event.proto";
     15 import "profiler_event.proto";
     16 import "system_profile.proto";
     17 import "user_action_event.proto";
     18 import "perf_data.proto";
     19 import "sampled_profile.proto";
     20 
     21 // Next tag: 12
     22 message ChromeUserMetricsExtension {
     23   // The product (i.e. end user application) for a given UMA log.
     24   enum Product {
     25     // Google Chrome product family.
     26     CHROME = 0;
     27   }
     28   // The product corresponding to this log. Note: The default value is Chrome,
     29   // so Chrome products will not transmit this field.
     30   optional Product product = 10 [default = CHROME];
     31 
     32   // The id of the client install that generated these events.
     33   //
     34   // For Chrome clients, this id is unique to a top-level (one level above the
     35   // "Default" directory) Chrome user data directory [1], and so is shared among
     36   // all Chrome user profiles contained in this user data directory.
     37   // An id of 0 is reserved for test data (monitoring and internal testing) and
     38   // should normally be ignored in analysis of the data.
     39   // [1] http://www.chromium.org/user-experience/user-data-directory
     40   optional fixed64 client_id = 1;
     41 
     42   // The session id for this user.
     43   // Values such as tab ids are only meaningful within a particular session.
     44   // The client keeps track of the session id and sends it with each event.
     45   // The session id is simply an integer that is incremented each time the user
     46   // relaunches Chrome.
     47   optional int32 session_id = 2;
     48 
     49   // Information about the user's browser and system configuration.
     50   optional SystemProfileProto system_profile = 3;
     51 
     52   // This message will log one or more of the following event types:
     53   repeated UserActionEventProto user_action_event = 4;
     54   repeated OmniboxEventProto omnibox_event = 5;
     55   repeated HistogramEventProto histogram_event = 6;
     56   repeated ProfilerEventProto profiler_event = 7;
     57 
     58   // TODO(sque): Deprecate this field and use |sampled_profile| instead.
     59   repeated PerfDataProto perf_data = 8;
     60 
     61   // A list of all collected sample-based profiles since the last UMA upload.
     62   repeated SampledProfile sampled_profile = 11;
     63 }
     64