add "always allow" option to the mediastream infobar and allow user to allow/not allow acces to devi

chrome/browser/chrome_content_browser_client.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/chrome_content_browser_client.h"
 
 #include <set>
 #include <utility>
 #include <vector>
 
@@ skipping 1107 matching lines @@
       TabContentsWrapper::GetCurrentWrapperForContents(contents);
   DCHECK(tab);
 
   InfoBarTabHelper* infobar_helper = tab->infobar_tab_helper();
   InfoBarDelegate* old_infobar = NULL;
   for (size_t i = 0; i < infobar_helper->infobar_count() && !old_infobar; ++i) {
     old_infobar =
         infobar_helper->GetInfoBarDelegateAt(i)->AsMediaStreamInfoBarDelegate();
   }
 
-  InfoBarDelegate* infobar = new MediaStreamInfoBarDelegate(infobar_helper,
-                                                            request,
-                                                            callback);
-  if (old_infobar)
-    infobar_helper->ReplaceInfoBar(old_infobar, infobar);
-  else
-    infobar_helper->AddInfoBar(infobar);
+  scoped_ptr<MediaStreamInfoBarDelegate>
+      infobar(new MediaStreamInfoBarDelegate(infobar_helper,
+                                             tab->profile(),
+                                             request,
+                                             callback));
+  if (infobar->ShouldShowInfoBar()) {
+    if (old_infobar)
+      infobar_helper->ReplaceInfoBar(old_infobar, infobar.release());
+    else
+      infobar_helper->AddInfoBar(infobar.release());
+  }
 }
 
 content::MediaObserver* ChromeContentBrowserClient::GetMediaObserver() {
   return MediaInternals::GetInstance();
 }
 
 void ChromeContentBrowserClient::RequestDesktopNotificationPermission(
     const GURL& source_origin,
     int callback_context,
     int render_process_id,
@@ skipping 462 matching lines @@
 #if defined(USE_NSS)
 crypto::CryptoModuleBlockingPasswordDelegate*
     ChromeContentBrowserClient::GetCryptoPasswordDelegate(
         const GURL& url) {
   return browser::NewCryptoModuleBlockingDialogDelegate(
       browser::kCryptoModulePasswordKeygen, url.host());
 }
 #endif
 
 }  // namespace chrome