Refactoring Reload in NavigationManager and CRWWebController.

ios/web_view/internal/cwv_web_view.mm

Index: ios/web_view/internal/cwv_web_view.mm
diff --git a/ios/web_view/internal/cwv_web_view.mm b/ios/web_view/internal/cwv_web_view.mm
index ff7c2d1e01182d1fec1f846744d6a9de1582f80c..ae66ac0dee4b9dbb13af3b64ec1b8260fbf97b65 100644
--- a/ios/web_view/internal/cwv_web_view.mm
+++ b/ios/web_view/internal/cwv_web_view.mm
@@ -132,7 +132,10 @@ - (void)goForward {
 }
 
 - (void)reload {
-  _webState->GetNavigationManager()->Reload(web::ReloadType::NORMAL, true);
+  // |check_for_repost| is false because CWVWebView does not support form

[Eugene But (OOO till 7-30), 2017/03/16 18:39:04]

s/form resubmission/repost form

Sorry we have specific terminology in Chrome for this, which I'm always
forgetting :(

[liaoyuke, 2017/03/17 17:59:21]

Done.

+  // resubmission dialogs.
+  _webState->GetNavigationManager()->Reload(web::ReloadType::NORMAL,
+                                            false /* check_for_repost */);
 }
 
 - (void)stopLoading {