extensions/renderer/scripts_run_info.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "extensions/renderer/scripts_run_info.h"
   6
   7 #include "base/metrics/histogram.h"
   8 #include "content/public/renderer/render_view.h"
   9 #include "extensions/common/extension_messages.h"
  10 #include "extensions/renderer/script_context.h"
  11 #include "third_party/WebKit/public/web/WebFrame.h"
  12
  13 namespace extensions {
  14
  15 ScriptsRunInfo::ScriptsRunInfo() : num_css(0u), num_js(0u) {
  16 }
  17
  18 ScriptsRunInfo::~ScriptsRunInfo() {
  19 }
  20
  21 void ScriptsRunInfo::LogRun(blink::WebFrame* frame,
  22                             UserScript::RunLocation location) {
  23   // Notify the browser if any extensions are now executing scripts.
  24   if (!executing_scripts.empty()) {
  25     content::RenderView* render_view =
  26         content::RenderView::FromWebView(frame->view());
  27     render_view->Send(new ExtensionHostMsg_ContentScriptsExecuting(
  28         render_view->GetRoutingID(),
  29         executing_scripts,
  30         ScriptContext::GetDataSourceURLForFrame(frame)));
  31   }
  32
  33   switch (location) {
  34     case UserScript::DOCUMENT_START:
  35       UMA_HISTOGRAM_COUNTS_100("Extensions.InjectStart_CssCount", num_css);
  36       UMA_HISTOGRAM_COUNTS_100("Extensions.InjectStart_ScriptCount", num_js);
  37       if (num_css || num_js)
  38         UMA_HISTOGRAM_TIMES("Extensions.InjectStart_Time", timer.Elapsed());
  39       break;
  40     case UserScript::DOCUMENT_END:
  41       UMA_HISTOGRAM_COUNTS_100("Extensions.InjectEnd_ScriptCount", num_js);
  42       if (num_js)
  43         UMA_HISTOGRAM_TIMES("Extensions.InjectEnd_Time", timer.Elapsed());
  44       break;
  45     case UserScript::DOCUMENT_IDLE:
  46       UMA_HISTOGRAM_COUNTS_100("Extensions.InjectIdle_ScriptCount", num_js);
  47       if (num_js)
  48         UMA_HISTOGRAM_TIMES("Extensions.InjectIdle_Time", timer.Elapsed());
  49       break;
  50     case UserScript::RUN_DEFERRED:
  51     case UserScript::BROWSER_DRIVEN:
  52       // TODO(rdevlin.cronin): Add histograms.
  53       break;
  54     case UserScript::UNDEFINED:
  55     case UserScript::RUN_LOCATION_LAST:
  56       NOTREACHED();
  57   }
  58 }
  59
  60 }  // namespace extensions