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_frame.h"
   9 #include "content/public/renderer/render_thread.h"
  10 #include "extensions/common/extension_messages.h"
  11 #include "extensions/renderer/script_context.h"
  12 #include "third_party/WebKit/public/web/WebLocalFrame.h"
  13
  14 namespace extensions {
  15
  16 ScriptsRunInfo::ScriptsRunInfo(content::RenderFrame* render_frame,
  17                                UserScript::RunLocation location)
  18     : num_css(0u),
  19       num_js(0u),
  20       num_blocking_js(0u),
  21       routing_id_(render_frame->GetRoutingID()),
  22       run_location_(location),
  23       frame_url_(ScriptContext::GetDataSourceURLForFrame(
  24           render_frame->GetWebFrame())) {
  25 }
  26
  27 ScriptsRunInfo::~ScriptsRunInfo() {
  28 }
  29
  30 void ScriptsRunInfo::LogRun() {
  31   // Notify the browser if any extensions are now executing scripts.
  32   if (!executing_scripts.empty()) {
  33     content::RenderThread::Get()->Send(
  34         new ExtensionHostMsg_ContentScriptsExecuting(
  35             routing_id_, executing_scripts, frame_url_));
  36   }
  37
  38   switch (run_location_) {
  39     case UserScript::DOCUMENT_START:
  40       UMA_HISTOGRAM_COUNTS_100("Extensions.InjectStart_CssCount", num_css);
  41       UMA_HISTOGRAM_COUNTS_100("Extensions.InjectStart_ScriptCount", num_js);
  42       if (num_blocking_js) {
  43         UMA_HISTOGRAM_COUNTS_100("Extensions.InjectStart_BlockingScriptCount",
  44                                  num_blocking_js);
  45       } else if (num_css || num_js) {
  46         UMA_HISTOGRAM_TIMES("Extensions.InjectStart_Time", timer.Elapsed());
  47       }
  48       break;
  49     case UserScript::DOCUMENT_END:
  50       UMA_HISTOGRAM_COUNTS_100("Extensions.InjectEnd_ScriptCount", num_js);
  51       if (num_blocking_js) {
  52         UMA_HISTOGRAM_COUNTS_100("Extensions.InjectEnd_BlockingScriptCount",
  53                                  num_blocking_js);
  54       } else if (num_js) {
  55         UMA_HISTOGRAM_TIMES("Extensions.InjectEnd_Time", timer.Elapsed());
  56       }
  57       break;
  58     case UserScript::DOCUMENT_IDLE:
  59       UMA_HISTOGRAM_COUNTS_100("Extensions.InjectIdle_ScriptCount", num_js);
  60       if (num_blocking_js) {
  61         UMA_HISTOGRAM_COUNTS_100("Extensions.InjectIdle_BlockingScriptCount",
  62                                  num_blocking_js);
  63       } else if (num_js) {
  64         UMA_HISTOGRAM_TIMES("Extensions.InjectIdle_Time", timer.Elapsed());
  65       }
  66       break;
  67     case UserScript::RUN_DEFERRED:
  68     case UserScript::BROWSER_DRIVEN:
  69       // TODO(rdevlin.cronin): Add histograms.
  70       break;
  71     case UserScript::UNDEFINED:
  72     case UserScript::RUN_LOCATION_LAST:
  73       NOTREACHED();
  74   }
  75 }
  76
  77 }  // namespace extensions