Add UMA histogram to track the various sources that request the feedback app

chrome/browser/ui/browser_command_controller.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/ui/browser_command_controller.h"
 
 #include <stddef.h>
 
 #include <string>
 
@@ skipping 541 matching lines @@
     case IDC_TASK_MANAGER:
       OpenTaskManager(browser_);
       break;
 #if defined(OS_CHROMEOS)
     case IDC_TAKE_SCREENSHOT:
       TakeScreenshot();
       break;
 #endif
 #if defined(GOOGLE_CHROME_BUILD)
     case IDC_FEEDBACK:
-      OpenFeedbackDialog(browser_);
+      OpenFeedbackDialog(browser_, kFeedbackSourceBrowserCommand);
       break;
 #endif
     case IDC_SHOW_BOOKMARK_BAR:
       ToggleBookmarkBar(browser_);
       break;
     case IDC_PROFILING_ENABLED:
       Profiling::Toggle();
       break;
 
     case IDC_SHOW_BOOKMARK_MANAGER:
@@ skipping 577 matching lines @@
 
 BrowserWindow* BrowserCommandController::window() {
   return browser_->window();
 }
 
 Profile* BrowserCommandController::profile() {
   return browser_->profile();
 }
 
 }  // namespace chrome