Move API functions registrations out of ExtensionFunctionRegistry.

chrome/browser/extensions/api/metrics_private/metrics_private_api.cc

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/extensions/api/metrics_private/metrics_private_api.h"
+
+#include <algorithm>
+
+#include "base/metrics/histogram.h"
+#include "chrome/common/extensions/extension.h"
+#include "content/public/browser/user_metrics.h"
+
+namespace extensions {
+
+namespace {
+
+const size_t kMaxBuckets = 10000; // We don't ever want more than these many
+                                  // buckets; there is no real need for them
+                                  // and would cause crazy memory usage
+} // namespace
+
+bool MetricsPrivateRecordUserActionFunction::RunImpl() {
+  std::string name;
+  EXTENSION_FUNCTION_VALIDATE(args_->GetString(0, &name));
+
+  content::RecordComputedAction(name);
+  return true;
+}
+
+bool MetricsHistogramHelperFunction::GetNameAndSample(std::string* name,
+                                                      int* sample) {
+  EXTENSION_FUNCTION_VALIDATE(args_->GetString(0, name));
+  EXTENSION_FUNCTION_VALIDATE(args_->GetInteger(1, sample));
+  return true;
+}
+
+bool MetricsHistogramHelperFunction::RecordValue(
+    const std::string& name,
+    base::HistogramType type,
+    int min, int max, size_t buckets,
+    int sample) {
+  // Make sure toxic values don't get to internal code.
+  // Fix for maximums
+  min = std::min(min, INT_MAX - 3);
+  max = std::min(max, INT_MAX - 3);
+  buckets = std::min(buckets, kMaxBuckets);
+  // Fix for minimums.
+  min = std::max(min, 1);
+  max = std::max(max, min + 1);
+  buckets = std::max(buckets, static_cast<size_t>(3));
+  // Trim buckets down to a maximum of the given range + over/underflow buckets
+  if (buckets > static_cast<size_t>(max - min + 2))
+    buckets = max - min + 2;
+
+  base::HistogramBase* counter;
+  if (type == base::LINEAR_HISTOGRAM) {
+    counter = base::LinearHistogram::FactoryGet(
+        name, min, max, buckets,
+        base::HistogramBase::kUmaTargetedHistogramFlag);
+  } else {
+    counter = base::Histogram::FactoryGet(
+        name, min, max, buckets,
+        base::HistogramBase::kUmaTargetedHistogramFlag);
+  }
+
+  counter->Add(sample);
+  return true;
+}
+
+bool MetricsPrivateRecordValueFunction::RunImpl() {
+  int sample;
+  EXTENSION_FUNCTION_VALIDATE(args_->GetInteger(1, &sample));
+
+  // Get the histogram parameters from the metric type object.
+  DictionaryValue* metric_type;
+  EXTENSION_FUNCTION_VALIDATE(args_->GetDictionary(0, &metric_type));
+
+  std::string name;
+  std::string type;
+  int min;
+  int max;
+  int buckets;
+  EXTENSION_FUNCTION_VALIDATE(metric_type->GetString("metricName", &name));
+  EXTENSION_FUNCTION_VALIDATE(metric_type->GetString("type", &type));
+  EXTENSION_FUNCTION_VALIDATE(metric_type->GetInteger("min", &min));
+  EXTENSION_FUNCTION_VALIDATE(metric_type->GetInteger("max", &max));
+  EXTENSION_FUNCTION_VALIDATE(metric_type->GetInteger("buckets", &buckets));
+
+  base::HistogramType histogram_type(type == "histogram-linear" ?
+      base::LINEAR_HISTOGRAM : base::HISTOGRAM);
+  return RecordValue(name, histogram_type, min, max, buckets, sample);
+}
+
+bool MetricsPrivateRecordPercentageFunction::RunImpl() {
+  std::string name;
+  int sample;
+  EXTENSION_FUNCTION_VALIDATE(GetNameAndSample(&name, &sample));
+  return RecordValue(name, base::LINEAR_HISTOGRAM, 1, 101, 102, sample);
+}
+
+bool MetricsPrivateRecordCountFunction::RunImpl() {
+  std::string name;
+  int sample;
+  EXTENSION_FUNCTION_VALIDATE(GetNameAndSample(&name, &sample));
+  return RecordValue(name, base::HISTOGRAM, 1, 1000000, 50, sample);
+}
+
+bool MetricsPrivateRecordSmallCountFunction::RunImpl() {
+  std::string name;
+  int sample;
+  EXTENSION_FUNCTION_VALIDATE(GetNameAndSample(&name, &sample));
+  return RecordValue(name, base::HISTOGRAM, 1, 100, 50, sample);
+}
+
+bool MetricsPrivateRecordMediumCountFunction::RunImpl() {
+  std::string name;
+  int sample;
+  EXTENSION_FUNCTION_VALIDATE(GetNameAndSample(&name, &sample));
+  return RecordValue(name, base::HISTOGRAM, 1, 10000, 50, sample);
+}
+
+bool MetricsPrivateRecordTimeFunction::RunImpl() {
+  std::string name;
+  int sample;
+  EXTENSION_FUNCTION_VALIDATE(GetNameAndSample(&name, &sample));
+  static const int kTenSecMs = 10 * 1000;
+  return RecordValue(name, base::HISTOGRAM, 1, kTenSecMs, 50, sample);
+}
+
+bool MetricsPrivateRecordMediumTimeFunction::RunImpl() {
+  std::string name;
+  int sample;
+  EXTENSION_FUNCTION_VALIDATE(GetNameAndSample(&name, &sample));
+  static const int kThreeMinMs = 3 * 60 * 1000;
+  return RecordValue(name, base::HISTOGRAM, 1, kThreeMinMs, 50, sample);
+}
+
+bool MetricsPrivateRecordLongTimeFunction::RunImpl() {
+  std::string name;
+  int sample;
+  EXTENSION_FUNCTION_VALIDATE(GetNameAndSample(&name, &sample));
+  static const int kOneHourMs = 60 * 60 * 1000;
+  return RecordValue(name, base::HISTOGRAM, 1, kOneHourMs, 50, sample);
+}
+
+} // namespace extensions