PlzNavigate: Move navigation-level mixed content checks to the browser.

content/browser/loader/navigation_resource_throttle.h

Index: content/browser/loader/navigation_resource_throttle.h
diff --git a/content/browser/loader/navigation_resource_throttle.h b/content/browser/loader/navigation_resource_throttle.h
index 45e9830e6fccc110816fe73ef66dec64aa473bb0..a4acbb2d642d0cef5f1ef63e81cbe829940aa4cc 100644
--- a/content/browser/loader/navigation_resource_throttle.h
+++ b/content/browser/loader/navigation_resource_throttle.h
@@ -9,6 +9,7 @@
 #include "base/memory/weak_ptr.h"
 #include "content/public/browser/navigation_throttle.h"
 #include "content/public/browser/resource_throttle.h"
+#include "content/public/common/request_context_type.h"
 
 namespace net {
 class URLRequest;
@@ -25,7 +26,8 @@ class NavigationResourceThrottle : public ResourceThrottle {
  public:
   NavigationResourceThrottle(
       net::URLRequest* request,
-      ResourceDispatcherHostDelegate* resource_dispatcher_host_delegate);
+      ResourceDispatcherHostDelegate* resource_dispatcher_host_delegate,
+      RequestContextType fetch_request_context_type);
   ~NavigationResourceThrottle() override;
 
   // ResourceThrottle overrides:
@@ -40,6 +42,7 @@ class NavigationResourceThrottle : public ResourceThrottle {
 
   net::URLRequest* request_;
   ResourceDispatcherHostDelegate* resource_dispatcher_host_delegate_;
+  RequestContextType fetch_request_context_type_;
   base::WeakPtrFactory<NavigationResourceThrottle> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(NavigationResourceThrottle);