Settings reset prompt: add UMA metrics reporting.

chrome/browser/safe_browsing/settings_reset_prompt/settings_reset_prompt_model.cc

Index: chrome/browser/safe_browsing/settings_reset_prompt/settings_reset_prompt_model.cc
diff --git a/chrome/browser/safe_browsing/settings_reset_prompt/settings_reset_prompt_model.cc b/chrome/browser/safe_browsing/settings_reset_prompt/settings_reset_prompt_model.cc
index d4025848575f2a05ac8bbc4c7e470622618f9f19..5d3041b84c2d592bb0034855378f5a2acf55280b 100644
--- a/chrome/browser/safe_browsing/settings_reset_prompt/settings_reset_prompt_model.cc
+++ b/chrome/browser/safe_browsing/settings_reset_prompt/settings_reset_prompt_model.cc
@@ -8,6 +8,7 @@
 
 #include "base/bind_helpers.h"
 #include "base/callback.h"
+#include "base/metrics/histogram_macros.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/google/google_brand.h"
 #include "chrome/browser/prefs/session_startup_pref.h"
@@ -276,6 +277,22 @@ SettingsResetPromptModel::extensions_to_disable() const {
   return extensions_to_disable_;
 }
 
+void SettingsResetPromptModel::ReportUmaMetrics() const {
+  UMA_HISTOGRAM_BOOLEAN("SettingsResetPrompt.PromptRequired",
+                        ShouldPromptForReset());
+  UMA_HISTOGRAM_ENUMERATION("SettingsResetPrompt.ResetState_DefaultSearch",
+                            default_search_reset_state(), RESET_STATE_MAX);
+  UMA_HISTOGRAM_ENUMERATION("SettingsResetPrompt.ResetState_StartupUrls",
+                            startup_urls_reset_state(), RESET_STATE_MAX);
+  UMA_HISTOGRAM_ENUMERATION("SettingsResetPrompt.ResetState_Homepage",
+                            homepage_reset_state(), RESET_STATE_MAX);
+  UMA_HISTOGRAM_COUNTS_100("SettingsResetPrompt.NumberOfExtensionsToDisable",
+                           extensions_to_disable().size());
+  UMA_HISTOGRAM_SPARSE_SLOWLY(
+      "SettingsResetPrompt.DelayBeforePromptParam",
+      prompt_config_->delay_before_prompt().InSeconds());
+}
+
 // static
 void SettingsResetPromptModel::OnSettingsFetched(
     Profile* profile,