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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "chrome/browser/chrome_browser_field_trials.h" | 5 #include "chrome/browser/chrome_browser_field_trials.h" |
6 | 6 |
7 #include <string> | 7 #include <string> |
8 | 8 |
9 #include "base/command_line.h" | 9 #include "base/command_line.h" |
10 #include "base/metrics/field_trial.h" | 10 #include "base/metrics/field_trial.h" |
11 #include "base/metrics/histogram_base.h" | |
11 #include "base/strings/string_util.h" | 12 #include "base/strings/string_util.h" |
12 #include "base/time/time.h" | 13 #include "base/time/time.h" |
13 #include "chrome/common/chrome_switches.h" | 14 #include "chrome/common/chrome_switches.h" |
14 #include "components/metrics/metrics_pref_names.h" | 15 #include "components/metrics/metrics_pref_names.h" |
15 #include "components/omnibox/browser/omnibox_field_trial.h" | 16 #include "components/omnibox/browser/omnibox_field_trial.h" |
16 | 17 |
17 #if defined(OS_ANDROID) || defined(OS_IOS) | 18 #if defined(OS_ANDROID) || defined(OS_IOS) |
18 #include "chrome/browser/chrome_browser_field_trials_mobile.h" | 19 #include "chrome/browser/chrome_browser_field_trials_mobile.h" |
19 #else | 20 #else |
20 #include "chrome/browser/chrome_browser_field_trials_desktop.h" | 21 #include "chrome/browser/chrome_browser_field_trials_desktop.h" |
(...skipping 12 matching lines...) Expand all Loading... | |
33 InstantiateDynamicTrials(); | 34 InstantiateDynamicTrials(); |
34 | 35 |
35 #if defined(OS_ANDROID) || defined(OS_IOS) | 36 #if defined(OS_ANDROID) || defined(OS_IOS) |
36 chrome::SetupMobileFieldTrials(parsed_command_line_); | 37 chrome::SetupMobileFieldTrials(parsed_command_line_); |
37 #else | 38 #else |
38 chrome::SetupDesktopFieldTrials(parsed_command_line_); | 39 chrome::SetupDesktopFieldTrials(parsed_command_line_); |
39 #endif | 40 #endif |
40 } | 41 } |
41 | 42 |
42 void ChromeBrowserFieldTrials::InstantiateDynamicTrials() { | 43 void ChromeBrowserFieldTrials::InstantiateDynamicTrials() { |
44 // Persistent histograms must be enabled as soon as possible. | |
45 const std::string group_name = | |
46 base::FieldTrialList::FindFullName("PersistentMetrics"); | |
47 if (base::StartsWith( | |
48 group_name, "Enabled", base::CompareCase::INSENSITIVE_ASCII) && | |
49 !parsed_command_line_.HasSwitch(switches::kDisablePersistentMetrics)) { | |
Alexei Svitkine (slow)
2015/12/15 22:48:52
Please use the base/feature_list.h API instead. Th
bcwhite
2015/12/16 16:23:46
Done.
| |
50 // Create persistent/shared memory and allow histograms to be stored in it. | |
51 // TODO(bcwhite): Update this with correct allocator and memory size. | |
52 base::HistogramBase::SetDefaultPersistentMemoryAllocator( | |
53 new base::LocalPersistentMemoryAllocator(1 << 20, // 1 MiB | |
54 0x4D5B9953, // SHA1(B..M..A..) | |
55 "BrowserMetricsAllocator")); | |
56 } | |
43 // The following trials are used from renderer process. | 57 // The following trials are used from renderer process. |
44 // Mark here so they will be sync-ed. | 58 // Mark here so they will be sync-ed. |
45 base::FieldTrialList::FindValue("DisplayList2dCanvas"); | 59 base::FieldTrialList::FindValue("DisplayList2dCanvas"); |
46 // Activate the autocomplete dynamic field trials. | 60 // Activate the autocomplete dynamic field trials. |
47 OmniboxFieldTrial::ActivateDynamicTrials(); | 61 OmniboxFieldTrial::ActivateDynamicTrials(); |
48 } | 62 } |
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