Update to Chromium revision 5fdc0fab (#520840)

- Windows now builds with clang by default.

libcef/browser/chrome_profile_stub.cc

@@ -33,7 +33,6 @@ void ChromeProfileStub::DestroyOffTheRecordProfile() {
 }
 
 bool ChromeProfileStub::HasOffTheRecordProfile() {
-  NOTREACHED();
   return false;
 }
 
@@ -41,6 +40,10 @@ Profile* ChromeProfileStub::GetOriginalProfile() {
   return this;
 }
 
+const Profile* ChromeProfileStub::GetOriginalProfile() const {
+  return this;
+}
+
 bool ChromeProfileStub::IsSupervised() const {
   return false;
 }
@@ -107,12 +110,6 @@ chrome_browser_net::Predictor* ChromeProfileStub::GetNetworkPredictor() {
   return NULL;
 }
 
-void ChromeProfileStub::ClearNetworkingHistorySince(
-    base::Time time,
-    const base::Closure& completion) {
-  NOTREACHED();
-}
-
 GURL ChromeProfileStub::GetHomePage() {
   NOTREACHED();
   return GURL();