Add a new metric for how many times permissions prompts are shown.

chrome/browser/permissions/permission_uma_util.cc

 // Copyright 2014 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/permissions/permission_uma_util.h"
 
 #include <utility>
 
 #include "base/metrics/histogram_macros.h"
 #include "base/strings/stringprintf.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/permissions/permission_manager.h"
 #include "chrome/browser/permissions/permission_util.h"
 #include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/ui/website_settings/permission_bubble_request.h"
 #include "components/rappor/rappor_service.h"
 #include "components/rappor/rappor_utils.h"
 #include "content/public/browser/permission_type.h"
 #include "content/public/common/origin_util.h"
 #include "url/gurl.h"
 
 // UMA keys need to be statically initialized so plain function would not
 // work. Use a Macro instead.
 #define PERMISSION_ACTION_UMA(secure_origin, permission, permission_secure, \
                               permission_insecure, action)                  \
@@ skipping 242 matching lines @@
                                           const GURL& revoked_origin) {
   // TODO(tsergeant): Expand metrics definitions for revocation to include all
   // permissions.
   if (permission == PermissionType::NOTIFICATIONS ||
       permission == PermissionType::GEOLOCATION ||
       permission == PermissionType::AUDIO_CAPTURE ||
       permission == PermissionType::VIDEO_CAPTURE) {
     RecordPermissionAction(permission, REVOKED, revoked_origin);
   }
 }
+
+void PermissionUmaUtil::PermissionPromptShown(
+    const std::vector<PermissionBubbleRequest*>& requests) {
+  DCHECK(!requests.empty());
+  PermissionBubbleType permission_prompt_type = PermissionBubbleType::MULTIPLE;
+  if (requests.size() == 1)
+    permission_prompt_type = requests[0]->GetPermissionBubbleType();
+  UMA_HISTOGRAM_ENUMERATION(
+      "Permissions.Prompt.Shown",
+      static_cast<base::HistogramBase::Sample>(permission_prompt_type),
+      static_cast<base::HistogramBase::Sample>(PermissionBubbleType::NUM));
+}