Respect primary user DevTools policy.

If DevTools are disabled for primary profile,
they shouldn't be opened for all other profiles as well.

Bug: 817943
Change-Id: I3b83abf3a43f74f0003980bfcfcf4cd256b73d8f
Reviewed-on: https://chromium-review.googlesource.com/957047
Commit-Queue: Sergey Poromov <poromov@chromium.org>
Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#543419}

chrome/browser/devtools/devtools_window.cc

@@ -22,6 +22,7 @@
 #include "chrome/browser/file_select_helper.h"
 #include "chrome/browser/infobars/infobar_service.h"
 #include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/sessions/session_tab_helper.h"
 #include "chrome/browser/task_manager/web_contents_tags.h"
 #include "chrome/browser/ui/browser.h"
@@ -988,6 +989,14 @@ DevToolsWindow* DevToolsWindow::Create(
       base::CommandLine::ForCurrentProcess()->HasSwitch(switches::kKioskMode))
     return nullptr;
 
+#if defined(OS_CHROMEOS)
+  // Do not create DevTools if it's disabled for primary profile.
+  const Profile* primary_profile = ProfileManager::GetPrimaryUserProfile();
+  if (primary_profile &&
+      primary_profile->GetPrefs()->GetBoolean(prefs::kDevToolsDisabled))
+    return nullptr;
+#endif
+
   if (inspected_web_contents) {
     // Check for a place to dock.
     Browser* browser = nullptr;