[ios] Removed RequestTracker dependency from WebLoadParams.

ios/web/navigation/web_load_params.h

Index: ios/web/navigation/web_load_params.h
diff --git a/ios/web/navigation/web_load_params.h b/ios/web/navigation/web_load_params.h
index 0fea4df104068041206bc02f4a5bc82346395179..427cb2fedc4cea9acd3ce56aa89afd8cd96455f2 100644
--- a/ios/web/navigation/web_load_params.h
+++ b/ios/web/navigation/web_load_params.h
@@ -8,18 +8,16 @@
 #import <Foundation/Foundation.h>
 
 #import "base/mac/scoped_nsobject.h"
-#include "ios/net/request_tracker.h"
 #include "ios/web/public/referrer.h"
 #include "ui/base/page_transition_types.h"
 #include "url/gurl.h"
 
 namespace web {
 
-// Parameters for creating a tab. Most paramaters are optional, and
-// can be left at the default values set by the constructor.
-// TODO(stuartmorgan): Remove the dependency on RequestTracker, then move
-// this into NavigationManager to parallel NavigationController's
-// LoadURLParams (which this is modeled after).
+// Parameters for URL loading. Most parameters are optional, and can be left at
+// the default values set by the constructor.
+// TODO(crbug.com/597990): Move this into NavigationManager to parallel
+// NavigationController's LoadURLParams (which this is modeled after).
 struct WebLoadParams {
  public:
   // The URL to load. Must be set.
@@ -35,9 +33,6 @@ struct WebLoadParams {
   // important for tracking whether to display pending URLs.
   bool is_renderer_initiated;
 
-  // The cache mode to load with. Defaults to CACHE_NORMAL.
-  net::RequestTracker::CacheMode cache_mode;
-
   // Any extra HTTP headers to add to the load.
   base::scoped_nsobject<NSDictionary> extra_headers;