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()
  16     : num_css(0u), num_js(0u), num_blocking_js(0u) {
  17 }
  18
  19 ScriptsRunInfo::~ScriptsRunInfo() {
  20 }
  21
  22 void ScriptsRunInfo::LogRun(blink::WebFrame* frame,
  23                             UserScript::RunLocation location) {
  24   // Notify the browser if any extensions are now executing scripts.
  25   if (!executing_scripts.empty()) {
  26     content::RenderView* render_view =
  27         content::RenderView::FromWebView(frame->view());
  28     render_view->Send(new ExtensionHostMsg_ContentScriptsExecuting(
  29         render_view->GetRoutingID(),
  30         executing_scripts,
  31         ScriptContext::GetDataSourceURLForFrame(frame)));
  32   }
  33
  34   switch (location) {
  35     case UserScript::DOCUMENT_START:
  36       UMA_HISTOGRAM_COUNTS_100("Extensions.InjectStart_CssCount", num_css);
  37       UMA_HISTOGRAM_COUNTS_100("Extensions.InjectStart_ScriptCount", num_js);
  38       if (num_blocking_js) {
  39         UMA_HISTOGRAM_COUNTS_100("Extensions.InjectStart_BlockingScriptCount",
  40                                  num_blocking_js);
  41       } else if (num_css || num_js) {
  42         UMA_HISTOGRAM_TIMES("Extensions.InjectStart_Time", timer.Elapsed());
  43       }
  44       break;
  45     case UserScript::DOCUMENT_END:
  46       UMA_HISTOGRAM_COUNTS_100("Extensions.InjectEnd_ScriptCount", num_js);
  47       if (num_blocking_js) {
  48         UMA_HISTOGRAM_COUNTS_100("Extensions.InjectEnd_BlockingScriptCount",
  49                                  num_blocking_js);
  50       } else if (num_js) {
  51         UMA_HISTOGRAM_TIMES("Extensions.InjectEnd_Time", timer.Elapsed());
  52       }
  53       break;
  54     case UserScript::DOCUMENT_IDLE:
  55       UMA_HISTOGRAM_COUNTS_100("Extensions.InjectIdle_ScriptCount", num_js);
  56       if (num_blocking_js) {
  57         UMA_HISTOGRAM_COUNTS_100("Extensions.InjectIdle_BlockingScriptCount",
  58                                  num_blocking_js);
  59       } else if (num_js) {
  60         UMA_HISTOGRAM_TIMES("Extensions.InjectIdle_Time", timer.Elapsed());
  61       }
  62       break;
  63     case UserScript::RUN_DEFERRED:
  64     case UserScript::BROWSER_DRIVEN:
  65       // TODO(rdevlin.cronin): Add histograms.
  66       break;
  67     case UserScript::UNDEFINED:
  68     case UserScript::RUN_LOCATION_LAST:
  69       NOTREACHED();
  70   }
  71 }
  72
  73 }  // namespace extensions