Move all callers of GetHomeDir() to PathService::Get(base::DIR_HOME).

chrome/browser/chrome_content_browser_client.cc

Index: chrome/browser/chrome_content_browser_client.cc
diff --git a/chrome/browser/chrome_content_browser_client.cc b/chrome/browser/chrome_content_browser_client.cc
index f99bd3b94ceaf10cff12a3191fcae4e1902ee03a..0c96c807dfce93ab04e3589c8c7831e03c92d1f5 100644
--- a/chrome/browser/chrome_content_browser_client.cc
+++ b/chrome/browser/chrome_content_browser_client.cc
@@ -1487,6 +1487,14 @@ void ChromeContentBrowserClient::AppendExtraCommandLineSwitches(
                                  arraysize(kIpcFuzzerSwitches));
 #endif
 
+#if defined(OS_CHROMEOS)
+  // On Chrome OS need to pass primary user homedir (in multi-profiles session).
+  base::FilePath homedir;
+  PathService::Get(base::DIR_HOME, &homedir);
+  command_line->AppendSwitchASCII(chromeos::switches::kHomedir,
+                                  homedir.value().c_str());
+#endif
+
   if (process_type == switches::kRendererProcess) {
 #if defined(OS_CHROMEOS)
     const std::string& login_profile =