Add experiments info to crash dumps.

chrome/renderer/chrome_render_process_observer.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/renderer/chrome_render_process_observer.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/message_loop.h"
 #include "base/memory/weak_ptr.h"
 #include "base/metrics/field_trial.h"
 #include "base/metrics/histogram.h"
 #include "base/native_library.h"
 #include "base/path_service.h"
 #include "base/process_util.h"
 #include "base/threading/platform_thread.h"
+#include "chrome/common/child_process_logging.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/extensions/extension_localization_peer.h"
+#include "chrome/common/metrics/experiments_helper.h"
 #include "chrome/common/net/net_resource_provider.h"
 #include "chrome/common/render_messages.h"
 #include "chrome/renderer/chrome_content_renderer_client.h"
 #include "chrome/renderer/content_settings_observer.h"
 #include "chrome/renderer/security_filter_peer.h"
 #include "content/public/common/resource_dispatcher_delegate.h"
 #include "content/public/renderer/render_thread.h"
 #include "content/public/renderer/render_view_visitor.h"
 #include "content/public/renderer/render_view.h"
 #include "crypto/nss_util.h"
@@ skipping 184 matching lines @@
     crypto::DisableNSSForkCheck();
     crypto::ForceNSSNoDBInit();
     crypto::EnsureNSSInit();
   }
 #elif defined(OS_WIN)
   // crypt32.dll is used to decode X509 certificates for Chromoting.
   // Only load this library when the feature is enabled.
   std::string error;
   base::LoadNativeLibrary(FilePath(L"crypt32.dll"), &error);
 #endif
+  // Setup initial set of crash dump data for Field Trials in this renderer.
+  ExperimentsHelper::SetChildProcessLoggingExperimentList();
 }
 
 ChromeRenderProcessObserver::~ChromeRenderProcessObserver() {
 }
 
 bool ChromeRenderProcessObserver::OnControlMessageReceived(
     const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(ChromeRenderProcessObserver, message)
     IPC_MESSAGE_HANDLER(ChromeViewMsg_SetIsIncognitoProcess,
@@ skipping 90 matching lines @@
       new ChromeViewHostMsg_WriteTcmallocHeapProfile_ACK(filename, result));
 #endif
 }
 
 #endif
 
 void ChromeRenderProcessObserver::OnSetFieldTrialGroup(
     const std::string& field_trial_name,
     const std::string& group_name) {
   base::FieldTrialList::CreateFieldTrial(field_trial_name, group_name);
+  ExperimentsHelper::SetChildProcessLoggingExperimentList();
 }
 
 void ChromeRenderProcessObserver::OnGetV8HeapStats() {
   v8::HeapStatistics heap_stats;
   v8::V8::GetHeapStatistics(&heap_stats);
   RenderThread::Get()->Send(new ChromeViewHostMsg_V8HeapStats(
       heap_stats.total_heap_size(), heap_stats.used_heap_size()));
 }
 
 void ChromeRenderProcessObserver::OnPurgeMemory() {
@@ skipping 29 matching lines @@
   if (clear_cache_pending_) {
     clear_cache_pending_ = false;
     WebCache::clear();
   }
 }
 
 const RendererContentSettingRules*
 ChromeRenderProcessObserver::content_setting_rules() const {
   return &content_setting_rules_;
 }