DevTools: place DevTools WebContents underneath inspected WebContents.

chrome/browser/prefs/browser_prefs.cc

Index: chrome/browser/prefs/browser_prefs.cc
diff --git a/chrome/browser/prefs/browser_prefs.cc b/chrome/browser/prefs/browser_prefs.cc
index 9e7a065d2ddbc80210d544a627e22ac6f92ea1ff..163d384e14407ae56992bad94dc9043092124173 100644
--- a/chrome/browser/prefs/browser_prefs.cc
+++ b/chrome/browser/prefs/browser_prefs.cc
@@ -519,14 +519,6 @@ void MigrateBrowserPrefs(Profile* profile, PrefService* local_state) {
 
   PrefService* user_prefs = profile->GetPrefs();
   if (!(current_version & WINDOWS_PREFS)) {
-    registry->RegisterIntegerPref(prefs::kDevToolsHSplitLocation, -1);
-    if (local_state->HasPrefPath(prefs::kDevToolsHSplitLocation)) {
-      user_prefs->SetInteger(
-          prefs::kDevToolsHSplitLocation,
-          local_state->GetInteger(prefs::kDevToolsHSplitLocation));
-    }
-    local_state->ClearPref(prefs::kDevToolsHSplitLocation);
-
     registry->RegisterDictionaryPref(prefs::kBrowserWindowPlacement);
     if (local_state->HasPrefPath(prefs::kBrowserWindowPlacement)) {
       const PrefService::Preference* pref =