PlzNavigate: support the WebRequest API

content/public/browser/resource_request_info.h

Index: content/public/browser/resource_request_info.h
diff --git a/content/public/browser/resource_request_info.h b/content/public/browser/resource_request_info.h
index e03cc52e516a3706be7236e525fda9452bf33378..ad3c07b44073431b0a35c7dec9e32411b74e237d 100644
--- a/content/public/browser/resource_request_info.h
+++ b/content/public/browser/resource_request_info.h
@@ -17,6 +17,7 @@ class URLRequest;
 }
 
 namespace content {
+class NavigationUIData;
 class ResourceContext;
 class WebContents;
 
@@ -156,6 +157,11 @@ class ResourceRequestInfo {
   // Whether this request if using Lo-Fi mode.
   virtual bool IsUsingLoFi() const = 0;
 
+  // PlzNavigate
+  // Only used for navigations. Returns opaque data set by the embedder on the
+  // UI thread at the beginning of navigation.
+  virtual NavigationUIData* GetNavigationUIData() const = 0;
+
  protected:
   virtual ~ResourceRequestInfo() {}
 };