Convert SetIsIncognitoProcess to use mojo.

chrome/renderer/chrome_render_thread_observer.cc

Index: chrome/renderer/chrome_render_thread_observer.cc
diff --git a/chrome/renderer/chrome_render_thread_observer.cc b/chrome/renderer/chrome_render_thread_observer.cc
index 2c96a76e59b086667e3ee63c789b1cfa4b332b8f..439087384fb8a662cf8e139be6cfc82d632e70e2 100644
--- a/chrome/renderer/chrome_render_thread_observer.cc
+++ b/chrome/renderer/chrome_render_thread_observer.cc
@@ -237,6 +237,7 @@ bool ChromeRenderThreadObserver::is_incognito_process_ = false;
 ChromeRenderThreadObserver::ChromeRenderThreadObserver()
     : field_trial_syncer_(this),
       visited_link_slave_(new visitedlink::VisitedLinkSlave),
+      renderer_binding_(this),
       weak_factory_(this) {
   const base::CommandLine& command_line =
       *base::CommandLine::ForCurrentProcess();
@@ -275,12 +276,23 @@ ChromeRenderThreadObserver::ChromeRenderThreadObserver()
 
 ChromeRenderThreadObserver::~ChromeRenderThreadObserver() {}
 
+void ChromeRenderThreadObserver::RegisterMojoInterfaces(
+    content::AssociatedInterfaceRegistry* associated_interfaces) {
+  associated_interfaces->AddInterface(
+      base::Bind(&ChromeRenderThreadObserver::OnRendererInterfaceRequest,
+                 base::Unretained(this)));
+}
+
+void ChromeRenderThreadObserver::OnRendererInterfaceRequest(
+    chrome::mojom::RendererAssociatedRequest request) {
+  DCHECK(!renderer_binding_.is_bound());
+  renderer_binding_.Bind(std::move(request));
+}
+
 bool ChromeRenderThreadObserver::OnControlMessageReceived(
     const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(ChromeRenderThreadObserver, message)
-    IPC_MESSAGE_HANDLER(ChromeViewMsg_SetIsIncognitoProcess,
-                        OnSetIsIncognitoProcess)
     IPC_MESSAGE_HANDLER(ChromeViewMsg_SetFieldTrialGroup, OnSetFieldTrialGroup)
     IPC_MESSAGE_HANDLER(ChromeViewMsg_SetContentSettingRules,
                         OnSetContentSettingRules)
@@ -300,9 +312,9 @@ void ChromeRenderThreadObserver::OnFieldTrialGroupFinalized(
       new ChromeViewHostMsg_FieldTrialActivated(trial_name));
 }
 
-void ChromeRenderThreadObserver::OnSetIsIncognitoProcess(
-    bool is_incognito_process) {
-  is_incognito_process_ = is_incognito_process;
+void ChromeRenderThreadObserver::InitialConfiguration(
+    chrome::mojom::InitialConfigurationParamsPtr params) {
+  is_incognito_process_ = params->is_incognito_process;
 }
 
 void ChromeRenderThreadObserver::OnSetContentSettingRules(