Initial support for Renderer Side Histograms...

chrome/browser/browser_about_handler.cc

 // Copyright (c) 2006-2008 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/browser_about_handler.h"
 
 #include <string>
 #include <vector>
 
 #include "base/file_version_info.h"
 #include "base/histogram.h"
+#include "base/platform_thread.h"
 #include "base/stats_table.h"
 #include "base/string_piece.h"
 #include "base/string_util.h"
 #include "base/thread.h"
 #include "base/tracked_objects.h"
 #include "chrome/browser/browser.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/dom_ui/chrome_url_data_manager.h"
 #include "chrome/browser/memory_details.h"
 #include "chrome/browser/net/dns_global.h"
 #include "chrome/browser/profile.h"
 #include "chrome/browser/profile_manager.h"
+#include "chrome/browser/renderer_host/render_process_host.h"
 #include "chrome/browser/renderer_host/render_view_host.h"
 #include "chrome/common/jstemplate_builder.h"
 #include "chrome/common/l10n_util.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/pref_service.h"
+#include "chrome/common/render_messages.h"
 #include "chrome/common/resource_bundle.h"
 #include "chrome/renderer/about_handler.h"
 #include "googleurl/src/gurl.h"
 #include "grit/browser_resources.h"
 #include "grit/chromium_strings.h"
 #include "grit/generated_resources.h"
 #include "grit/locale_settings.h"
 #include "webkit/glue/webkit_glue.h"
 #ifdef CHROME_V8
 #include "v8/include/v8.h"
@@ skipping 246 matching lines @@
   static const StringPiece version_html(
       ResourceBundle::GetSharedInstance().GetRawDataResource(
           IDR_ABOUT_VERSION_HTML));
 
   return jstemplate_builder::GetTemplateHtml(
       version_html, &localized_strings, "t" /* template root node id */);
 }
 
 // static
 std::string BrowserAboutHandler::AboutCredits() {
-  static const std::string credits_html = 
+  static const std::string credits_html =
       ResourceBundle::GetSharedInstance().GetDataResource(
           IDR_CREDITS_HTML);
 
   return credits_html;
 }
 
 // static
 std::string BrowserAboutHandler::AboutTerms() {
-  static const std::string terms_html = 
+  static const std::string terms_html =
       ResourceBundle::GetSharedInstance().GetDataResource(
           IDR_TERMS_HTML);
 
   return terms_html;
 }
 
 // static
 std::string BrowserAboutHandler::AboutPlugins() {
   // Strings used in the JsTemplate file.
   DictionaryValue localized_strings;
@@ skipping 22 matching lines @@
       ResourceBundle::GetSharedInstance().GetRawDataResource(
           IDR_ABOUT_PLUGINS_HTML));
 
   return jstemplate_builder::GetTemplateHtml(
       plugins_html, &localized_strings, "t" /* template root node id */);
 }
 
 // static
 std::string BrowserAboutHandler::AboutHistograms(const std::string& query) {
   std::string data;
+  for (RenderProcessHost::iterator it = RenderProcessHost::begin();
+       it != RenderProcessHost::end(); ++it) {
+    it->second->Send(new ViewMsg_GetRendererHistograms());
+  }
+
+  // TODO(raman): Delay page layout until we get respnoses
+  // back from renderers, and not have to use a fixed size delay.
+  PlatformThread::Sleep(1000);
+
   StatisticsRecorder::WriteHTMLGraph(query, &data);
   return data;
 }
 
 // static
 std::string BrowserAboutHandler::AboutObjects(const std::string& query) {
   std::string data;
   tracked_objects::ThreadData::WriteHTML(query, &data);
   return data;
 }
@@ skipping 245 matching lines @@
 
   AboutSource* about_source = static_cast<AboutSource*>(source_);
   about_source->FinishDataRequest(template_html, request_id_);
 }
 
 // static
 void BrowserAboutHandler::AboutMemory(AboutSource* source, int request_id) {
   // The AboutMemoryHandler cleans itself up.
   new AboutMemoryHandler(source, request_id);
 }