Ensure that the pending entry is cleared when a navigation commits.

content/browser/web_contents/navigation_controller_impl_unittest.cc

Index: content/browser/web_contents/navigation_controller_impl_unittest.cc
diff --git a/content/browser/web_contents/navigation_controller_impl_unittest.cc b/content/browser/web_contents/navigation_controller_impl_unittest.cc
index 5e69b6f8636e88de0d0bd35e1b482368e8b29117..3cda1780e7a0f78653d6d3e9669fad912f6f932e 100644
--- a/content/browser/web_contents/navigation_controller_impl_unittest.cc
+++ b/content/browser/web_contents/navigation_controller_impl_unittest.cc
@@ -1595,6 +1595,8 @@ TEST_F(NavigationControllerTest, BackSubframe) {
   EXPECT_TRUE(notifications.Check1AndReset(NOTIFICATION_NAV_ENTRY_COMMITTED));
   EXPECT_EQ(3, controller.GetEntryCount());
   EXPECT_EQ(1, controller.GetCurrentEntryIndex());
+  EXPECT_EQ(-1, controller.GetPendingEntryIndex());
+  EXPECT_FALSE(controller.GetPendingEntry());
 
   // Go back one more.
   controller.GoBack();
@@ -1604,6 +1606,8 @@ TEST_F(NavigationControllerTest, BackSubframe) {
   EXPECT_TRUE(notifications.Check1AndReset(NOTIFICATION_NAV_ENTRY_COMMITTED));
   EXPECT_EQ(3, controller.GetEntryCount());
   EXPECT_EQ(0, controller.GetCurrentEntryIndex());
+  EXPECT_EQ(-1, controller.GetPendingEntryIndex());
+  EXPECT_FALSE(controller.GetPendingEntry());
 }
 
 TEST_F(NavigationControllerTest, LinkClick) {