Convert SetIsIncognitoProcess to use mojo.

chrome/browser/chrome_content_browser_client.cc

Index: chrome/browser/chrome_content_browser_client.cc
diff --git a/chrome/browser/chrome_content_browser_client.cc b/chrome/browser/chrome_content_browser_client.cc
index 2cab771dcbe9857263ba97ea71a87b5e9eea2297..db1a6605714d10fdcb7329ccfe4d04677357cbc4 100644
--- a/chrome/browser/chrome_content_browser_client.cc
+++ b/chrome/browser/chrome_content_browser_client.cc
@@ -108,6 +108,7 @@
 #include "chrome/common/pepper_permission_util.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/render_messages.h"
+#include "chrome/common/renderer.mojom.h"
 #include "chrome/common/secure_origin_whitelist.h"
 #include "chrome/common/stack_sampling_configuration.h"
 #include "chrome/common/url_constants.h"
@@ -1078,8 +1079,11 @@ void ChromeContentBrowserClient::RenderProcessWillLaunch(
   host->AddFilter(new cdm::CdmMessageFilterAndroid());
 #endif
 
-  host->Send(new ChromeViewMsg_SetIsIncognitoProcess(
-      profile->IsOffTheRecord()));
+  bool is_incognito_process = profile->IsOffTheRecord();
+
+  chrome::mojom::RendererAssociatedPtr renderer_interface;
+  host->GetChannel()->GetRemoteAssociatedInterface(&renderer_interface);
+  renderer_interface->SetInitialConfiguration(is_incognito_process);
 
   for (size_t i = 0; i < extra_parts_.size(); ++i)
     extra_parts_[i]->RenderProcessWillLaunch(host);
@@ -1095,6 +1099,8 @@ void ChromeContentBrowserClient::RenderProcessWillLaunch(
     GetRendererContentSettingRules(
         HostContentSettingsMapFactory::GetForProfile(profile), &rules);
   }
+  // TODO(nigeltao): eliminate this legacy IPC. Instead, add an extra arg to
+  // the renderer_interface->SetInitialConfiguration call.
   host->Send(new ChromeViewMsg_SetContentSettingRules(rules));
 }