Revert of Move navigation-induced hiding of form-validation-bubble to the browser process.

third_party/WebKit/Source/core/dom/DocumentTest.cpp

Index: third_party/WebKit/Source/core/dom/DocumentTest.cpp
diff --git a/third_party/WebKit/Source/core/dom/DocumentTest.cpp b/third_party/WebKit/Source/core/dom/DocumentTest.cpp
index 673536c1c9554689d462dfbacefdfc037a5a4480..d06b908fbdbaf9f1fe161442c382920a4ad7efb7 100644
--- a/third_party/WebKit/Source/core/dom/DocumentTest.cpp
+++ b/third_party/WebKit/Source/core/dom/DocumentTest.cpp
@@ -258,8 +258,12 @@
   MockValidationMessageClient() { Reset(); }
   void Reset() {
     show_validation_message_was_called = false;
+    will_unload_document_was_called = false;
+    document_detached_was_called = false;
   }
   bool show_validation_message_was_called;
+  bool will_unload_document_was_called;
+  bool document_detached_was_called;
 
   // ValidationMessageClient functions.
   void ShowValidationMessage(const Element& anchor,
@@ -272,6 +276,12 @@
   void HideValidationMessage(const Element& anchor) override {}
   bool IsValidationMessageVisible(const Element& anchor) override {
     return true;
+  }
+  void WillUnloadDocument(const Document&) override {
+    will_unload_document_was_called = true;
+  }
+  void DocumentDetached(const Document&) override {
+    document_detached_was_called = true;
   }
   void WillBeDestroyed() override {}
 
@@ -769,6 +779,8 @@
 
   // prepareForCommit() unloads the document, and shutdown.
   GetDocument().GetFrame()->PrepareForCommit();
+  EXPECT_TRUE(mock_client->will_unload_document_was_called);
+  EXPECT_TRUE(mock_client->document_detached_was_called);
   // Unload handler tried to show a validation message, but it should fail.
   EXPECT_FALSE(mock_client->show_validation_message_was_called);