Use SameDocument term in tests instead of SamePage.

This is follow up cleanup after renaming NavigationHandle::IsSamePage to
NavigationHandle::IsSameDocument in this CL:
https://codereview.chromium.org/2716493004/

BUG=695189
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_site_isolation

Review-Url: https://codereview.chromium.org/2742923002
Cr-Commit-Position: refs/heads/master@{#456231}

content/browser/frame_host/navigation_controller_impl_browsertest.cc

@@ -6048,13 +6048,13 @@ IN_PROC_BROWSER_TEST_F(NavigationControllerBrowserTest,
       static_cast<WebContentsImpl*>(shell()->web_contents());
   FrameTreeNode* root = web_contents->GetFrameTree()->root();
 
-  // Navigate to a simple page and then perform an in-page navigation.
+  // Navigate to a simple page and then perform a fragment change navigation.
   GURL start_url(embedded_test_server()->GetURL("a.com", "/title1.html"));
   EXPECT_TRUE(NavigateToURL(shell(), start_url));
 
-  GURL same_page_url(
+  GURL fragment_change_url(
       embedded_test_server()->GetURL("a.com", "/title1.html#foo"));
-  EXPECT_TRUE(NavigateToURL(shell(), same_page_url));
+  EXPECT_TRUE(NavigateToURL(shell(), fragment_change_url));
   EXPECT_EQ(2, web_contents->GetController().GetEntryCount());
 
   // Replace the URL of the current NavigationEntry with one that will cause
@@ -6082,8 +6082,8 @@ IN_PROC_BROWSER_TEST_F(NavigationControllerBrowserTest,
   // classified as SAME_PAGE) was leaving the FrameNavigationEntry with the
   // same document sequence number as the previous entry but updates the URL.
   // Doing a back session history navigation now will cause the browser to
-  // consider it as in-page because of this matching document sequence number
-  // and lead to a mismatch of origin and URL in the renderer process.
+  // consider it as same document because of this matching document sequence
+  // number and lead to a mismatch of origin and URL in the renderer process.
   {
     TestNavigationObserver observer(web_contents);
     web_contents->GetController().GoBack();
@@ -6151,26 +6151,27 @@ class GoBackAndCommitFilter : public BrowserMessageFilter {
 };
 
 // Test which simulates a race condition between a cross-origin, same-process
-// navigation and a same page session history navigation. When such a race
+// navigation and a same document session history navigation. When such a race
 // occurs, the renderer will commit the cross-origin navigation, updating its
 // version of the current document sequence number, and will send an IPC to the
 // browser process. The session history navigation comes after the commit for
 // the cross-origin navigation and updates the URL, but not the origin of the
 // document. This results in mismatch between the two and causes the renderer
 // process to be killed. See https://crbug.com/630103.
-IN_PROC_BROWSER_TEST_F(NavigationControllerBrowserTest,
-                       RaceCrossOriginNavigationAndSamePageHistoryNavigation) {
+IN_PROC_BROWSER_TEST_F(
+    NavigationControllerBrowserTest,
+    RaceCrossOriginNavigationAndSameDocumentHistoryNavigation) {
   WebContentsImpl* web_contents =
       static_cast<WebContentsImpl*>(shell()->web_contents());
   FrameTreeNode* root = web_contents->GetFrameTree()->root();
 
-  // Navigate to a simple page and then perform an in-page navigation.
+  // Navigate to a simple page and then perform a same document navigation.
   GURL start_url(embedded_test_server()->GetURL("a.com", "/title1.html"));
   EXPECT_TRUE(NavigateToURL(shell(), start_url));
 
-  GURL same_page_url(
+  GURL same_document_url(
       embedded_test_server()->GetURL("a.com", "/title1.html#foo"));
-  EXPECT_TRUE(NavigateToURL(shell(), same_page_url));
+  EXPECT_TRUE(NavigateToURL(shell(), same_document_url));
   EXPECT_EQ(2, web_contents->GetController().GetEntryCount());
 
   // Create a GoBackAndCommitFilter, which will delay the commit IPC for a
@@ -6214,7 +6215,7 @@ IN_PROC_BROWSER_TEST_F(NavigationControllerBrowserTest,
     EXPECT_TRUE(ExecuteScriptAndExtractString(
         web_contents, "domAutomationController.send(document.origin)",
         &origin));
-    EXPECT_EQ(same_page_url.GetOrigin().spec(), origin + "/");
+    EXPECT_EQ(same_document_url.GetOrigin().spec(), origin + "/");
   } else {
     // Wait for the back navigation to commit as well.
     history_commit_observer.Wait();
@@ -6676,10 +6677,10 @@ class NavigationHandleCommitObserver : public WebContentsObserver {
   bool was_renderer_initiated_;
 };
 
-// Test that a same-page navigation does not lead to the deletion of the
-// NavigationHandle for an ongoing different page navigation.
+// Test that a same document navigation does not lead to the deletion of the
+// NavigationHandle for an ongoing different document navigation.
 IN_PROC_BROWSER_TEST_F(NavigationControllerBrowserTest,
-                       SamePageNavigationDoesntDeleteNavigationHandle) {
+                       SameDocumentNavigationDoesntDeleteNavigationHandle) {
   const GURL kURL1 = embedded_test_server()->GetURL("/title1.html");
   const GURL kPushStateURL =
       embedded_test_server()->GetURL("/title1.html#fragment");
@@ -6749,10 +6750,10 @@ IN_PROC_BROWSER_TEST_F(NavigationControllerBrowserTest,
 
 }
 
-// Tests that a same-page browser-initiated navigation is properly reported by
-// the NavigationHandle.
+// Tests that a same document browser-initiated navigation is properly reported
+// by the NavigationHandle.
 IN_PROC_BROWSER_TEST_F(NavigationControllerBrowserTest,
-                       SamePageBrowserInitiated) {
+                       SameDocumentBrowserInitiated) {
   const GURL kURL = embedded_test_server()->GetURL("/title1.html");
   const GURL kFragmentURL =
       embedded_test_server()->GetURL("/title1.html#fragment");

content/browser/media/session/media_session_service_impl_browsertest.cc

@@ -175,17 +175,17 @@ IN_PROC_BROWSER_TEST_F(MediaSessionServiceImplBrowserTest,
 }
 
 IN_PROC_BROWSER_TEST_F(MediaSessionServiceImplBrowserTest,
-                       DontResetServiceForSamePageNavigation) {
+                       DontResetServiceForSameDocumentNavigation) {
   NavigateToURL(shell(), GetTestUrl(".", "title1.html"));
   EnsurePlayer();
 
   EXPECT_TRUE(ExecuteScriptToSetUpMediaSessionSync());
 
-  // Start a same-page navigation and check the playback state, metadata,
+  // Start a fragment navigation and check the playback state, metadata,
   // actions are not reset.
-  GURL same_page_url = GetTestUrl(".", "title1.html");
-  same_page_url = GURL(same_page_url.spec() + "#some-anchor");
-  NavigateToURLAndWaitForFinish(shell(), same_page_url);
+  GURL fragment_change_url = GetTestUrl(".", "title1.html");
+  fragment_change_url = GURL(fragment_change_url.spec() + "#some-anchor");
+  NavigateToURLAndWaitForFinish(shell(), fragment_change_url);
 
   EXPECT_EQ(blink::mojom::MediaSessionPlaybackState::PLAYING,
             GetService()->playback_state());