Use BrowserContext as key in API. Switch Autofill to use BC in place of Profile.

chrome/browser/webdata/web_data_service_factory.cc

Index: chrome/browser/webdata/web_data_service_factory.cc
diff --git a/chrome/browser/webdata/web_data_service_factory.cc b/chrome/browser/webdata/web_data_service_factory.cc
index 5c0968d0feaf4185fb42992c6928ab69bc707830..10794d121a9d9ede66764317990840d213af5012 100644
--- a/chrome/browser/webdata/web_data_service_factory.cc
+++ b/chrome/browser/webdata/web_data_service_factory.cc
@@ -10,12 +10,12 @@
 #include "chrome/common/chrome_constants.h"
 
 // static
-scoped_refptr<WebDataServiceBase> WebDataServiceBase::ForProfile(
-    Profile* profile) {
+scoped_refptr<WebDataServiceBase> WebDataServiceBase::ForContext(
+    content::BrowserContext* context) {
   // TODO(joi): Does the implicit/explicit distinction really matter?
   // It's just used for a DCHECK.
-  return WebDataServiceFactory::GetForProfile(profile,
-                                              Profile::EXPLICIT_ACCESS);
+  return WebDataServiceFactory::GetForProfile(
+      static_cast<Profile*>(context), Profile::EXPLICIT_ACCESS);
 }
 
 WebDataServiceFactory::WebDataServiceFactory()