Implement important sites dialog for desktop.

chrome/browser/ui/webui/metrics_handler.h

 // Copyright (c) 2011 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.
 
 #ifndef CHROME_BROWSER_UI_WEBUI_METRICS_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_METRICS_HANDLER_H_
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "content/public/browser/web_ui_message_handler.h"
@@ skipping 26 matching lines @@
 
   // TODO(dbeam): http://crbug.com/104338
 
   // Callback for the "metricsHandler:recordInHistogram" message. This records
   // into a histogram. |args| contains the histogram name, the value to record,
   // and the maximum allowed value, which can be at most 4000. The histogram
   // will use at most 100 buckets, one for each 1, 10, or 100 different values,
   // depending on the maximum value.
   void HandleRecordInHistogram(const base::ListValue* args);
 
+  // Callback for the "metricsHandler:recordBooleanHistogram" message. This
+  // records into a boolean histogram. |args| contains the histogram name, and
+  // the value to record.
+  void HandleRecordBooleanHistogram(const base::ListValue* args);
+
   // Record a millisecond time value in a histogram, similar to
   // UMA_HISTOGRAM_TIMES. Handles times between 1ms and 10sec. |args|
   // contains the histogram name and a value in milliseconds.
   void HandleRecordTime(const base::ListValue* args);
 
   // Callback for the "metricsHandler:logEventTime" message.
   void HandleLogEventTime(const base::ListValue* args);
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MetricsHandler);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_METRICS_HANDLER_H_