s/IsSamePage/IsSameDocument for NavigationContext.

ios/web/web_state/navigation_context_impl_unittest.mm

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ios/web/web_state/navigation_context_impl.h"
 
 #import "ios/web/public/test/fakes/test_web_state.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 
 namespace web {
 
 // Test fixture for NavigationContextImplTest testing.
 class NavigationContextImplTest : public PlatformTest {
  protected:
   NavigationContextImplTest() : url_("https://chromium.test") {}
 
   TestWebState web_state_;
   GURL url_;
 };
 
 // Tests CreateNavigationContext factory method.
 TEST_F(NavigationContextImplTest, NavigationContext) {
   std::unique_ptr<NavigationContext> context =
       NavigationContextImpl::CreateNavigationContext(&web_state_, url_);
   ASSERT_TRUE(context);
 
   EXPECT_EQ(&web_state_, context->GetWebState());
   EXPECT_EQ(url_, context->GetUrl());
-  EXPECT_FALSE(context->IsSamePage());
+  EXPECT_FALSE(context->IsSameDocument());
   EXPECT_FALSE(context->IsErrorPage());
 }
 
 // Tests CreateSamePageNavigationContext factory method.
 TEST_F(NavigationContextImplTest, SamePageNavigationContext) {
   std::unique_ptr<NavigationContext> context =
       NavigationContextImpl::CreateSamePageNavigationContext(&web_state_, url_);
   ASSERT_TRUE(context);
 
   EXPECT_EQ(&web_state_, context->GetWebState());
   EXPECT_EQ(url_, context->GetUrl());
-  EXPECT_TRUE(context->IsSamePage());
+  EXPECT_TRUE(context->IsSameDocument());
   EXPECT_FALSE(context->IsErrorPage());
 }
 
 // Tests CreateErrorPageNavigationContext factory method.
 TEST_F(NavigationContextImplTest, ErrorPageNavigationContext) {
   std::unique_ptr<NavigationContext> context =
       NavigationContextImpl::CreateErrorPageNavigationContext(&web_state_,
                                                               url_);
   ASSERT_TRUE(context);
 
   EXPECT_EQ(&web_state_, context->GetWebState());
   EXPECT_EQ(url_, context->GetUrl());
-  EXPECT_FALSE(context->IsSamePage());
+  EXPECT_FALSE(context->IsSameDocument());
   EXPECT_TRUE(context->IsErrorPage());
 }
 
 }  // namespace web