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

chrome/browser/ui/webui/options2/content_settings_handler2.cc

Index: chrome/browser/ui/webui/options2/content_settings_handler2.cc
diff --git a/chrome/browser/ui/webui/options2/content_settings_handler2.cc b/chrome/browser/ui/webui/options2/content_settings_handler2.cc
index 37361437f44d78816f86d39db90591f632e15a86..1d5e70fbde6e201735d1a41b536653af7af154aa 100644
--- a/chrome/browser/ui/webui/options2/content_settings_handler2.cc
+++ b/chrome/browser/ui/webui/options2/content_settings_handler2.cc
@@ -194,6 +194,19 @@ bool HostedAppHasPermission(
     return extension.is_hosted_app() && extension.HasAPIPermission(permission);
 }
 
+// Create a DictionaryValue* that will act as a data source for a single row
+// in the mediastream exceptions table. Ownership of the pointer is
+// passed to the caller.
+DictionaryValue* GetMediaStreamExceptionForPage(
+    const ContentSettingsPattern& pattern) {
+  DictionaryValue* exception = new DictionaryValue();
+  exception->SetString(kDisplayPattern, pattern.ToString());
+  exception->SetString(kSetting, ContentSettingToString(CONTENT_SETTING_ALLOW));
+  exception->SetString(kOrigin, pattern.ToString());
+  exception->SetString(kSource, std::string());
+  return exception;
+}
+
 // Add an "Allow"-entry to the list of |exceptions| for a |url_pattern| from
 // the web extent of a hosted |app|.
 void AddExceptionForHostedApp(const std::string& url_pattern,
@@ -337,6 +350,7 @@ const ContentSettingsHandler::ExContentSettingsTypeNameEntry
   {CONTENT_SETTINGS_TYPE_FULLSCREEN, "fullscreen"},
   {CONTENT_SETTINGS_TYPE_MOUSELOCK, "mouselock"},
   {EX_CONTENT_SETTINGS_TYPE_PEPPER_FLASH_CAMERAMIC, "pepper-flash-cameramic"},
+  {CONTENT_SETTINGS_TYPE_MEDIASTREAM, "mediastream"},
 };
 
 ContentSettingsHandler::ContentSettingsHandler() {
@@ -431,6 +445,11 @@ void ContentSettingsHandler::GetLocalizedValues(
     { "protectedContentInfo", IDS_PROTECTED_CONTENT_INFO },
     { "protectedContentEnable", IDS_PROTECTED_CONTENT_ENABLE},
 #endif  // defined(OS_CHROMEOS)
+    // Media stream capture device filter.
+    { "mediastream_tab_label", IDS_MEDIA_STREAM_TAB_LABEL },
+    { "mediastream_header", IDS_MEDIA_STREAM_HEADER },
+    { "mediastream_ask", IDS_MEDIA_STREAM_ASK_RADIO },
+    { "mediastream_block", IDS_MEDIA_STREAM_BLOCK_RADIO },
   };
 
   RegisterStrings(localized_strings, resources, arraysize(resources));
@@ -459,6 +478,8 @@ void ContentSettingsHandler::GetLocalizedValues(
                 IDS_MOUSE_LOCK_TAB_LABEL);
   RegisterTitle(localized_strings, "pepper-flash-cameramic",
                 IDS_PEPPER_FLASH_CAMERAMIC_TAB_LABEL);
+  RegisterTitle(localized_strings, "mediastream",
+                IDS_MEDIA_STREAM_TAB_LABEL);
 
   Profile* profile = Profile::FromWebUI(web_ui());
   localized_strings->SetBoolean(
@@ -678,6 +699,8 @@ void ContentSettingsHandler::UpdateExceptionsViewFromModel(
       break;
     case EX_CONTENT_SETTINGS_TYPE_PEPPER_FLASH_CAMERAMIC:
       UpdateFlashCameraMicExceptionsView();
+    case CONTENT_SETTINGS_TYPE_MEDIASTREAM:
+      UpdateMediaStreamExceptionsView();
       break;
     default:
       UpdateExceptionsViewFromHostContentSettingsMap(
@@ -695,6 +718,9 @@ void ContentSettingsHandler::UpdateOTRExceptionsViewFromModel(
     case CONTENT_SETTINGS_TYPE_AUTO_SELECT_CERTIFICATE:
     case EX_CONTENT_SETTINGS_TYPE_PEPPER_FLASH_CAMERAMIC:
       break;
+    case CONTENT_SETTINGS_TYPE_MEDIASTREAM:
+      // TODO(xians): Add MediaStream support to OTRExceptionsView.
+      break;
     default:
       UpdateExceptionsViewFromOTRHostContentSettingsMap(
           type.ToContentSettingsType());
@@ -837,6 +863,35 @@ void ContentSettingsHandler::UpdateFlashCameraMicExceptionsView() {
       ExContentSettingsType(EX_CONTENT_SETTINGS_TYPE_PEPPER_FLASH_CAMERAMIC));
 }
 
+void ContentSettingsHandler::UpdateMediaStreamExceptionsView() {
+  ContentSettingsForOneType entries;
+  GetContentSettingsMap()->GetSettingsForOneType(
+      CONTENT_SETTINGS_TYPE_MEDIASTREAM, "", &entries);
+
+  ListValue exceptions;
+  for (size_t i = 0; i < entries.size(); ++i) {
+    // Don't add default settings.
+    if (entries[i].primary_pattern == ContentSettingsPattern::Wildcard() &&
+        entries[i].secondary_pattern == ContentSettingsPattern::Wildcard() &&
+        entries[i].source != "preference") {
+      continue;
+    }
+
+    exceptions.Append(
+        GetMediaStreamExceptionForPage(entries[i].primary_pattern));
+  }
+
+  StringValue type_string(ContentSettingsTypeToGroupName(
+      CONTENT_SETTINGS_TYPE_MEDIASTREAM));
+  web_ui()->CallJavascriptFunction("ContentSettings.setExceptions", type_string,
+                                   exceptions);
+
+  // This is mainly here to keep this function ideologically parallel to
+  // UpdateExceptionsViewFromHostContentSettingsMap().
+  UpdateSettingDefaultFromModel(
+      ExContentSettingsType(CONTENT_SETTINGS_TYPE_MEDIASTREAM));
+}
+
 void ContentSettingsHandler::UpdateExceptionsViewFromHostContentSettingsMap(
     ContentSettingsType type) {
   ContentSettingsForOneType entries;
@@ -1047,6 +1102,10 @@ void ContentSettingsHandler::SetContentFilter(const ListValue* args) {
       content::RecordAction(
           UserMetricsAction("Options_DefaultFlashCameraMicSettingChanged"));
       break;
+    case CONTENT_SETTINGS_TYPE_MEDIASTREAM:
+      content::RecordAction(
+          UserMetricsAction("Options_DefaultMediaStreamSettingChanged"));
+      break;
     default:
       break;
   }
@@ -1117,15 +1176,24 @@ void ContentSettingsHandler::RemoveException(const ListValue* args) {
       HostContentSettingsMap* settings_map =
           mode == "normal" ? GetContentSettingsMap() :
                              GetOTRContentSettingsMap();
-      // The settings map could be null if the mode was OTR but the OTR profile
-      // got destroyed before we received this message.
       if (settings_map) {
-        settings_map->SetContentSetting(
-            ContentSettingsPattern::FromString(pattern),
-            ContentSettingsPattern::Wildcard(),
-            type.ToContentSettingsType(),
-            "",
-            CONTENT_SETTING_DEFAULT);
+        // MediaStream is using compound value, so we need to use
+        // SetWebsiteSetting instead of SetContentSetting.
+        if (type == CONTENT_SETTINGS_TYPE_MEDIASTREAM) {
+          settings_map->SetWebsiteSetting(
+              ContentSettingsPattern::FromString(pattern),
+              ContentSettingsPattern::Wildcard(),
+              type.ToContentSettingsType(),
+              "",
+              NULL);
+        } else {
+          settings_map->SetContentSetting(
+              ContentSettingsPattern::FromString(pattern),
+              ContentSettingsPattern::Wildcard(),
+              type.ToContentSettingsType(),
+              "",
+              CONTENT_SETTING_DEFAULT);
+        }
       }
     }
   }
@@ -1144,7 +1212,8 @@ void ContentSettingsHandler::SetException(const ListValue* args) {
 
   ExContentSettingsType type = ExContentSettingsTypeFromGroupName(type_string);
   if (type == CONTENT_SETTINGS_TYPE_GEOLOCATION ||
-      type == CONTENT_SETTINGS_TYPE_NOTIFICATIONS) {
+      type == CONTENT_SETTINGS_TYPE_NOTIFICATIONS ||
+      type == CONTENT_SETTINGS_TYPE_MEDIASTREAM) {
     NOTREACHED();
   } else if (type == EX_CONTENT_SETTINGS_TYPE_PEPPER_FLASH_CAMERAMIC) {
     DCHECK(IsValidHost(pattern));