Removed Form Resubmission callback from CRWWebDelegate.

ios/web/web_state/web_state_delegate_bridge_unittest.mm

Index: ios/web/web_state/web_state_delegate_bridge_unittest.mm
diff --git a/ios/web/web_state/web_state_delegate_bridge_unittest.mm b/ios/web/web_state/web_state_delegate_bridge_unittest.mm
index 422b0ecb4907405f5a40d74ef7370cc8a7e10502..65886409994e2b47d4205e8da33b21e0fa6d6c6c 100644
--- a/ios/web/web_state/web_state_delegate_bridge_unittest.mm
+++ b/ios/web/web_state/web_state_delegate_bridge_unittest.mm
@@ -97,6 +97,16 @@ TEST_F(WebStateDelegateBridgeTest, HandleContextMenu) {
   EXPECT_EQ(context_menu_params.location.y, result_params->location.y);
 }
 
+// Tests |ShowRepostFormWarningDialog| forwarding.

[rohitrao (ping after 24h), 2017/01/24 14:15:13]

Is it worth also testing that the default implementation calls callback(true),
if the delegate does not implement this method?

[Eugene But (OOO till 7-30), 2017/01/24 21:33:11]

Yep. Added the test.

+TEST_F(WebStateDelegateBridgeTest, ShowRepostFormWarningDialog) {
+  EXPECT_FALSE([delegate_ repostFormWarningRequested]);
+  EXPECT_FALSE([delegate_ webState]);
+  base::Callback<void(bool)> callback;
+  bridge_->ShowRepostFormWarningDialog(&test_web_state_, callback);
+  EXPECT_TRUE([delegate_ repostFormWarningRequested]);
+  EXPECT_EQ(&test_web_state_, [delegate_ webState]);
+}
+
 // Tests |GetJavaScriptDialogPresenter| forwarding.
 TEST_F(WebStateDelegateBridgeTest, GetJavaScriptDialogPresenter) {
   EXPECT_FALSE([delegate_ javaScriptDialogPresenterRequested]);