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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/prerender/prerender_histograms.h" | 5 #include "chrome/browser/prerender/prerender_histograms.h" |
6 | 6 |
7 #include <string> | 7 #include <string> |
8 | 8 |
9 #include "base/format_macros.h" | 9 #include "base/format_macros.h" |
10 #include "base/metrics/field_trial.h" | 10 #include "base/metrics/field_trial.h" |
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160 } | 160 } |
161 | 161 |
162 void PrerenderHistograms::RecordPrerenderStarted(Origin origin) const { | 162 void PrerenderHistograms::RecordPrerenderStarted(Origin origin) const { |
163 if (OriginIsOmnibox(origin)) { | 163 if (OriginIsOmnibox(origin)) { |
164 UMA_HISTOGRAM_ENUMERATION( | 164 UMA_HISTOGRAM_ENUMERATION( |
165 StringPrintf("Prerender.OmniboxPrerenderCount%s", | 165 StringPrintf("Prerender.OmniboxPrerenderCount%s", |
166 PrerenderManager::GetModeString()), 1, 2); | 166 PrerenderManager::GetModeString()), 1, 2); |
167 } | 167 } |
168 } | 168 } |
169 | 169 |
170 void PrerenderHistograms::RecordConcurrency(size_t prerender_count, | 170 void PrerenderHistograms::RecordConcurrency(size_t prerender_count) const { |
171 size_t max_concurrency) const { | 171 static const size_t kMaxRecordableConcurrency = 20; |
172 static const size_t kMaxRecordableConcurrency = 3; | 172 DCHECK_GE(kMaxRecordableConcurrency, Config().max_link_concurrency); |
173 DCHECK_GE(kMaxRecordableConcurrency, max_concurrency); | 173 UMA_HISTOGRAM_ENUMERATION( |
174 if (max_concurrency > 1) { | 174 StringPrintf("Prerender.PrerenderCountOf%" PRIuS "Max", |
175 UMA_HISTOGRAM_ENUMERATION( | 175 kMaxRecordableConcurrency), |
176 StringPrintf("Prerender.PrerenderCountOf%" PRIuS "Max", | 176 prerender_count, kMaxRecordableConcurrency + 1); |
177 max_concurrency), | |
178 prerender_count, kMaxRecordableConcurrency + 1); | |
179 } | |
180 } | 177 } |
181 | 178 |
182 void PrerenderHistograms::RecordUsedPrerender(Origin origin) const { | 179 void PrerenderHistograms::RecordUsedPrerender(Origin origin) const { |
183 if (OriginIsOmnibox(origin)) { | 180 if (OriginIsOmnibox(origin)) { |
184 UMA_HISTOGRAM_ENUMERATION( | 181 UMA_HISTOGRAM_ENUMERATION( |
185 StringPrintf("Prerender.OmniboxNavigationsUsedPrerenderCount%s", | 182 StringPrintf("Prerender.OmniboxNavigationsUsedPrerenderCount%s", |
186 PrerenderManager::GetModeString()), 1, 2); | 183 PrerenderManager::GetModeString()), 1, 2); |
187 } | 184 } |
188 } | 185 } |
189 | 186 |
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390 return last_experiment_id_; | 387 return last_experiment_id_; |
391 } | 388 } |
392 | 389 |
393 bool PrerenderHistograms::IsOriginExperimentWash() const { | 390 bool PrerenderHistograms::IsOriginExperimentWash() const { |
394 if (!WithinWindow()) | 391 if (!WithinWindow()) |
395 return false; | 392 return false; |
396 return origin_experiment_wash_; | 393 return origin_experiment_wash_; |
397 } | 394 } |
398 | 395 |
399 } // namespace prerender | 396 } // namespace prerender |
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