Remove base::WaitForSingleProcess

chrome/browser/apps/app_shim/app_shim_interactive_uitest_mac.mm

Index: chrome/browser/apps/app_shim/app_shim_interactive_uitest_mac.mm
diff --git a/chrome/browser/apps/app_shim/app_shim_interactive_uitest_mac.mm b/chrome/browser/apps/app_shim/app_shim_interactive_uitest_mac.mm
index 59c61d6bec10d4bd36d974e4aa58bb32c21da7e3..cee3ec098a93f3e79b0273cecd176b6f0a508c36 100644
--- a/chrome/browser/apps/app_shim/app_shim_interactive_uitest_mac.mm
+++ b/chrome/browser/apps/app_shim/app_shim_interactive_uitest_mac.mm
@@ -425,8 +425,10 @@ IN_PROC_BROWSER_TEST_F(AppShimInteractiveTest, MAYBE_HostedAppLaunch) {
     GetFirstHostedAppWindow()->window()->Close();
     // Wait for the window to be closed.
     listener.WaitUntilRemoved();
-    ASSERT_TRUE(
-        base::WaitForSingleProcess(shim_pid, TestTimeouts::action_timeout()));
+    base::Process shim_process(shim_pid);
+    int exit_code;
+    ASSERT_TRUE(shim_process.WaitForExitWithTimeout(
+                    TestTimeouts::action_timeout(), &exit_code));
 
     EXPECT_FALSE(GetFirstHostedAppWindow());
     EXPECT_FALSE(HasAppShimHost(profile(), app->id()));
@@ -497,8 +499,10 @@ IN_PROC_BROWSER_TEST_F(AppShimInteractiveTest, MAYBE_Launch) {
     pid_t shim_pid;
     EXPECT_EQ(noErr, GetProcessPID(&shim_psn, &shim_pid));
     GetFirstAppWindow()->GetBaseWindow()->Close();
-    ASSERT_TRUE(
-        base::WaitForSingleProcess(shim_pid, TestTimeouts::action_timeout()));
+    base::Process shim_process(shim_pid);
+    int exit_code;
+    ASSERT_TRUE(shim_process.WaitForExitWithTimeout(
+                    TestTimeouts::action_timeout(), &exit_code));
 
     EXPECT_FALSE(GetFirstAppWindow());
     EXPECT_FALSE(HasAppShimHost(profile(), app->id()));