Move FieldTrialRecorder mojom to content

chrome/renderer/chrome_render_thread_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_thread_observer.h"
 
 #include <stddef.h>
 
 #include <limits>
 #include <memory>
 #include <set>
 #include <utility>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/files/file_util.h"
 #include "base/location.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/memory/weak_ptr.h"
-#include "base/metrics/field_trial.h"
 #include "base/metrics/histogram.h"
 #include "base/metrics/statistics_recorder.h"
 #include "base/path_service.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/threading/platform_thread.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "build/build_config.h"
 #include "chrome/common/child_process_logging.h"
 #include "chrome/common/chrome_paths.h"
-#include "chrome/common/field_trial_recorder.mojom.h"
 #include "chrome/common/media/media_resource_provider.h"
 #include "chrome/common/net/net_resource_provider.h"
 #include "chrome/common/render_messages.h"
 #include "chrome/common/resource_usage_reporter.mojom.h"
 #include "chrome/common/resource_usage_reporter_type_converters.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/renderer/content_settings_observer.h"
 #include "chrome/renderer/security_filter_peer.h"
 #include "components/visitedlink/renderer/visitedlink_slave.h"
 #include "content/public/child/resource_dispatcher_delegate.h"
@@ skipping 185 matching lines @@
     mojo::InterfaceRequest<chrome::mojom::ResourceUsageReporter> request) {
   mojo::MakeStrongBinding(base::MakeUnique<ResourceUsageReporterImpl>(observer),
                           std::move(request));
 }
 
 }  // namespace
 
 bool ChromeRenderThreadObserver::is_incognito_process_ = false;
 
 ChromeRenderThreadObserver::ChromeRenderThreadObserver()
-    : field_trial_syncer_(this),
-      visited_link_slave_(new visitedlink::VisitedLinkSlave),
+    : visited_link_slave_(new visitedlink::VisitedLinkSlave),
       weak_factory_(this) {
-  const base::CommandLine& command_line =
-      *base::CommandLine::ForCurrentProcess();
-
   RenderThread* thread = RenderThread::Get();
   resource_delegate_.reset(new RendererResourceDelegate());
   thread->SetResourceDispatcherDelegate(resource_delegate_.get());
 
   thread->GetInterfaceRegistry()->AddInterface(
       base::Bind(CreateResourceUsageReporter, weak_factory_.GetWeakPtr()));
 
   // Configure modules that need access to resources.
   net::NetModule::SetResourceProvider(chrome_common_net::NetResourceProvider);
   media::SetLocalizedStringProvider(
       chrome_common_media::LocalizedStringProvider);
 
-  field_trial_syncer_.InitFieldTrialObserving(command_line,
-                                              switches::kSingleProcess);
-
   // chrome-native: is a scheme used for placeholder navigations that allow
   // UIs to be drawn with platform native widgets instead of HTML.  These pages
   // should not be accessible, and should also be treated as empty documents
   // that can commit synchronously.  No code should be runnable in these pages,
   // so it should not need to access anything nor should it allow javascript
   // URLs since it should never be visible to the user.
   WebString native_scheme(WebString::fromASCII(chrome::kChromeNativeScheme));
   WebSecurityPolicy::registerURLSchemeAsDisplayIsolated(native_scheme);
   WebSecurityPolicy::registerURLSchemeAsEmptyDocument(native_scheme);
   WebSecurityPolicy::registerURLSchemeAsNotAllowingJavascriptURLs(
@@ skipping 18 matching lines @@
       chrome::mojom::RendererConfiguration::Name_);
 }
 
 void ChromeRenderThreadObserver::OnRenderProcessShutdown() {
   visited_link_slave_.reset();
 
   // Workaround for http://crbug.com/672646
   renderer_configuration_bindings_.CloseAllBindings();
 }
 
-void ChromeRenderThreadObserver::OnFieldTrialGroupFinalized(
-    const std::string& trial_name,
-    const std::string& group_name) {
-  chrome::mojom::FieldTrialRecorderPtr field_trial_recorder;
-  content::RenderThread::Get()->GetRemoteInterfaces()->GetInterface(
-      &field_trial_recorder);
-  field_trial_recorder->FieldTrialActivated(trial_name);
-}
-
 void ChromeRenderThreadObserver::SetInitialConfiguration(
     bool is_incognito_process) {
   is_incognito_process_ = is_incognito_process;
 }
 
 void ChromeRenderThreadObserver::SetContentSettingRules(
     const RendererContentSettingRules& rules) {
   content_setting_rules_ = rules;
 }
 
 void ChromeRenderThreadObserver::SetFieldTrialGroup(
     const std::string& trial_name,
     const std::string& group_name) {
-  field_trial_syncer_.OnSetFieldTrialGroup(trial_name, group_name);
+  RenderThread::Get()->SetFieldTrialGroup(trial_name, group_name);
 }
 
 void ChromeRenderThreadObserver::OnRendererConfigurationAssociatedRequest(
     chrome::mojom::RendererConfigurationAssociatedRequest request) {
   renderer_configuration_bindings_.AddBinding(this, std::move(request));
 }
 
 const RendererContentSettingRules*
 ChromeRenderThreadObserver::content_setting_rules() const {
   return &content_setting_rules_;
 }