Move the crash metrics to the crash reproting lib to avoid a back dependency ...

chrome_frame/crash_metrics.cc

-// Copyright (c) 2010 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_frame/crash_metrics.h"
-
-#include "base/histogram.h"
-#include "base/registry.h"
-#include "chrome_frame/utils.h"
-
-static const wchar_t kChromeFrameMetricsKey[] =
-    L"Software\\Google\\ChromeFrameMetrics";
-
-base::LazyInstance<CrashMetricsReporter>
-    g_crash_metrics_instance_(base::LINKER_INITIALIZED);
-
-wchar_t* CrashMetricsReporter::g_metric_names[LAST_METRIC] = {
-  L"navigationcount",
-  L"crashcount",
-  L"chrome_frame_navigationcount",
-  L"sessionid",
-};
-
-CrashMetricsReporter* CrashMetricsReporter::GetInstance() {
-  return &g_crash_metrics_instance_.Get();
-}
-
-bool CrashMetricsReporter::SetMetric(Metric metric, int value) {
-  DCHECK(metric >= NAVIGATION_COUNT && metric <= LAST_METRIC);
-
-  RegKey metric_key;
-  if (metric_key.Create(HKEY_CURRENT_USER, kChromeFrameMetricsKey,
-                        KEY_SET_VALUE)) {
-    if (metric_key.WriteValue(g_metric_names[metric], value)) {
-      return true;
-    } else {
-      DLOG(ERROR) << "Failed to read ChromeFrame metric:"
-                  << g_metric_names[metric];
-    }
-  } else {
-    DLOG(ERROR) << "Failed to create ChromeFrame metrics key";
-  }
-  return false;
-}
-
-int CrashMetricsReporter::GetMetric(Metric metric) {
-  DCHECK(metric >= NAVIGATION_COUNT && metric <= LAST_METRIC);
-
-  int ret = 0;
-  RegKey metric_key;
-  if (metric_key.Open(HKEY_CURRENT_USER, kChromeFrameMetricsKey,
-                      KEY_QUERY_VALUE)) {
-    int value = 0;
-    if (metric_key.ReadValueDW(g_metric_names[metric],
-                               reinterpret_cast<DWORD*>(&value))) {
-      ret = value;
-    }
-  }
-  return ret;
-}
-
-int CrashMetricsReporter::IncrementMetric(Metric metric) {
-  DCHECK(metric >= NAVIGATION_COUNT && metric <= LAST_METRIC);
-  int metric_value = GetMetric(metric);
-  metric_value++;
-  SetMetric(metric, metric_value);
-  return metric_value;
-}
-
-void CrashMetricsReporter::RecordCrashMetrics() {
-  int navigation_count = GetMetric(NAVIGATION_COUNT);
-  if (navigation_count > 0) {
-    THREAD_SAFE_UMA_HISTOGRAM_COUNTS("ChromeFrame.HostNavigationCount",
-                                     navigation_count);
-    SetMetric(NAVIGATION_COUNT, 0);
-  }
-
-  int chrome_frame_navigation_count = GetMetric(CHROME_FRAME_NAVIGATION_COUNT);
-  if (chrome_frame_navigation_count > 0) {
-    THREAD_SAFE_UMA_HISTOGRAM_COUNTS("ChromeFrame.CFNavigationCount",
-                                     chrome_frame_navigation_count);
-    SetMetric(CHROME_FRAME_NAVIGATION_COUNT, 0);
-  }
-
-  int crash_count = GetMetric(CRASH_COUNT);
-  if (crash_count > 0) {
-    THREAD_SAFE_UMA_HISTOGRAM_COUNTS("ChromeFrame.HostCrashCount",
-                                      crash_count);
-    SetMetric(CRASH_COUNT, 0);
-  }
-}
-