cros: Fix restoring session windows after crash inconsistent minimized window counts

chrome/browser/sessions/session_restore_browsertest_chromeos.cc

Index: chrome/browser/sessions/session_restore_browsertest_chromeos.cc
diff --git a/chrome/browser/sessions/session_restore_browsertest_chromeos.cc b/chrome/browser/sessions/session_restore_browsertest_chromeos.cc
index de48f66ddc7d65b5485acada0fb9b328f5a30cc7..096dc2b68df1310b64fda058c0a05c4e8ab3cc3f 100644
--- a/chrome/browser/sessions/session_restore_browsertest_chromeos.cc
+++ b/chrome/browser/sessions/session_restore_browsertest_chromeos.cc
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "chrome/browser/sessions/session_restore.h"
+
 #include <stddef.h>
 
 #include <list>
@@ -78,9 +80,16 @@ class SessionRestoreTestChromeOS : public InProcessBrowserTest {
         browser()->profile(), SessionStartupPref(SessionStartupPref::LAST));
   }
 
-  Profile* profile() { return browser()->profile(); }
+  Profile* profile() {
+    if (!profile_)
+      profile_ = browser()->profile();
+
+    return profile_;
+  }
 
+ private:
   std::list<Browser*> browser_list_;
+  Profile* profile_ = nullptr;
 };
 
 // Thse tests are in pairs. The PRE_ test creates some browser windows and
@@ -203,3 +212,48 @@ IN_PROC_BROWSER_TEST_F(SessionRestoreTestChromeOS, RestoreMinimized) {
   // they have a browser running instead of just showing them an empty desktop.
   EXPECT_EQ(1u, minimized_count);
 }
+
+// Tests that restoring minimized session windows to the existing browser should
+// keep consistent minimized window counts.
+IN_PROC_BROWSER_TEST_F(SessionRestoreTestChromeOS,
+                       PRE_RestoreSessionWindowsToExistingBrowser) {
+  // One browser window is always created by default.
+  ASSERT_TRUE(browser());
+  browser()->window()->Minimize();
+
+  Browser* browser2 =
+      CreateBrowserWithParams(Browser::CreateParams(profile(), true));
+  browser2->window()->Minimize();
+
+  Browser* browser3 =
+      CreateBrowserWithParams(Browser::CreateParams(profile(), true));
+  browser3->window()->Minimize();
+
+  EXPECT_TRUE(browser()->window()->IsMinimized());
+  EXPECT_TRUE(browser2->window()->IsMinimized());
+  EXPECT_TRUE(browser3->window()->IsMinimized());
+
+  // Do not turn on startup session restore.
+}
+
+IN_PROC_BROWSER_TEST_F(SessionRestoreTestChromeOS,
+                       RestoreSessionWindowsToExistingBrowser) {
+  // By default, there will be one browser window opened.
+  ASSERT_EQ(1u, BrowserList::GetInstance()->size());
+  Browser* default_browser = BrowserList::GetInstance()->GetLastActive();
+
+  SessionRestore::RestoreSession(
+      profile(), default_browser,
+      SessionRestore::CLOBBER_CURRENT_TAB | SessionRestore::SYNCHRONOUS,
+      std::vector<GURL>());
+
+  size_t total_count = 0;
+  size_t minimized_count = 0;
+  for (auto* browser : *BrowserList::GetInstance()) {
+    ++total_count;
+    if (browser->window()->IsMinimized())
+      ++minimized_count;
+  }
+  EXPECT_EQ(3u, total_count);
+  EXPECT_EQ(2u, minimized_count);
+}