[ios] Moved WebLoadParams inside NavigationManager.

ios/web/public/navigation_manager.h

Index: ios/web/public/navigation_manager.h
diff --git a/ios/web/public/navigation_manager.h b/ios/web/public/navigation_manager.h
index 11f1f9d4e80644770e535aee32620e703ea620e2..8e2b0fac735a78b9d585359204b119271a914cce 100644
--- a/ios/web/public/navigation_manager.h
+++ b/ios/web/public/navigation_manager.h
@@ -7,7 +7,13 @@
 
 #include <stddef.h>
 
+#import "base/mac/scoped_nsobject.h"
 #include "ios/web/public/browser_url_rewriter.h"
+#include "ios/web/public/referrer.h"
+#include "ui/base/page_transition_types.h"
+
+@class NSDictionary;
+@class NSData;
 
 namespace web {
 
@@ -22,6 +28,40 @@ class WebState;
 // exactly one NavigationManager.
 class NavigationManager {
  public:
+  // Parameters for URL loading. Most parameters are optional, and can be left
+  // at the default values set by the constructor.
+  struct WebLoadParams {
+   public:
+    // The URL to load. Must be set.
+    GURL url;
+
+    // The referrer for the load. May be empty.
+    Referrer referrer;
+
+    // The transition type for the load. Defaults to PAGE_TRANSITION_LINK.
+    ui::PageTransition transition_type;
+
+    // True for renderer-initiated navigations. This is
+    // important for tracking whether to display pending URLs.
+    bool is_renderer_initiated;
+
+    // Any extra HTTP headers to add to the load.
+    base::scoped_nsobject<NSDictionary> extra_headers;
+
+    // Any post data to send with the load. When setting this, you should
+    // generally set a Content-Type header as well.
+    base::scoped_nsobject<NSData> post_data;
+
+    // Create a new WebLoadParams with the given URL and defaults for all other
+    // parameters.
+    explicit WebLoadParams(const GURL& url);
+    ~WebLoadParams();
+
+    // Allow copying WebLoadParams.
+    WebLoadParams(const WebLoadParams& other);
+    WebLoadParams& operator=(const WebLoadParams& other);
+  };
+
   virtual ~NavigationManager() {}
 
   // Gets the BrowserState associated with this NavigationManager. Can never