Introduce WebCachePolicy to merge cache policy enums

content/renderer/history_controller.cc

Index: content/renderer/history_controller.cc
diff --git a/content/renderer/history_controller.cc b/content/renderer/history_controller.cc
index e459d9a3f7c1722f4ec68424c162ea9068c5cbf0..12d0f1b872fc25d7d33c625234b14787784ee10e 100644
--- a/content/renderer/history_controller.cc
+++ b/content/renderer/history_controller.cc
@@ -44,6 +44,7 @@
 #include "third_party/WebKit/public/web/WebFrameLoadType.h"
 #include "third_party/WebKit/public/web/WebLocalFrame.h"
 
+using blink::WebCachePolicy;
 using blink::WebFrame;
 using blink::WebHistoryCommitType;
 using blink::WebHistoryItem;
@@ -64,7 +65,7 @@ bool HistoryController::GoToEntry(
     blink::WebLocalFrame* main_frame,
     scoped_ptr<HistoryEntry> target_entry,
     scoped_ptr<NavigationParams> navigation_params,
-    WebURLRequest::CachePolicy cache_policy) {
+    WebCachePolicy cache_policy) {
   DCHECK(!main_frame->parent());
   HistoryFrameLoadVector same_document_loads;
   HistoryFrameLoadVector different_document_loads;