Hide BrowsingInstance from all but SiteInstance, as intended by design.

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 a110f870e4737b075ad8212b8466f53e85ae4252..ba885ca1fe18bfae010e69154a802f5e81432e6b 100644
--- a/chrome/browser/chrome_content_browser_client.cc
+++ b/chrome/browser/chrome_content_browser_client.cc
@@ -66,7 +66,6 @@
 #include "chrome/common/render_messages.h"
 #include "chrome/common/url_constants.h"
 #include "content/browser/browser_url_handler.h"
-#include "content/browser/browsing_instance.h"
 #include "content/browser/child_process_security_policy.h"
 #include "content/browser/gpu/gpu_data_manager.h"
 #include "content/browser/gpu/gpu_process_host.h"
@@ -327,7 +326,7 @@ void ChromeContentBrowserClient::RenderViewHostCreated(
 
   SiteInstance* site_instance = render_view_host->site_instance();
   Profile* profile = Profile::FromBrowserContext(
-      site_instance->browsing_instance()->browser_context());
+      site_instance->GetBrowserContext());
 
   new ChromeRenderViewHostObserver(render_view_host,
                                    profile->GetNetworkPredictor());
@@ -489,7 +488,7 @@ void ChromeContentBrowserClient::SiteInstanceGotProcess(
   CHECK(site_instance->HasProcess());
 
   Profile* profile = Profile::FromBrowserContext(
-      site_instance->browsing_instance()->browser_context());
+      site_instance->GetBrowserContext());
   ExtensionService* service = profile->GetExtensionService();
   if (!service)
     return;
@@ -518,7 +517,7 @@ void ChromeContentBrowserClient::SiteInstanceDeleting(
     return;
 
   Profile* profile = Profile::FromBrowserContext(
-      site_instance->browsing_instance()->browser_context());
+      site_instance->GetBrowserContext());
   ExtensionService* service = profile->GetExtensionService();
   if (!service)
     return;