DevTools: add interventions message source into log entries.

Review-Url: https://codereview.chromium.org/2623423004
Cr-Commit-Position: refs/heads/master@{#443505}

third_party/WebKit/Source/core/inspector/ConsoleTypes.h

@@ -19,7 +19,8 @@ enum MessageSource {
   OtherMessageSource,
   DeprecationMessageSource,
   WorkerMessageSource,
-  ViolationMessageSource
+  ViolationMessageSource,
+  InterventionMessageSource
 };
 
 enum MessageLevel {

third_party/WebKit/Source/core/inspector/InspectorLogAgent.cpp

@@ -44,6 +44,8 @@ String messageSourceValue(MessageSource source) {
       return protocol::Log::LogEntry::SourceEnum::Worker;
     case ViolationMessageSource:
       return protocol::Log::LogEntry::SourceEnum::Violation;
+    case InterventionMessageSource:
+      return protocol::Log::LogEntry::SourceEnum::Intervention;
     default:
       return protocol::Log::LogEntry::SourceEnum::Other;
   }

third_party/WebKit/Source/core/inspector/browser_protocol.json

@@ -4374,7 +4374,7 @@
                 "type": "object",
                 "description": "Log entry.",
                 "properties": [
-                    { "name": "source", "type": "string", "enum": ["xml", "javascript", "network", "storage", "appcache", "rendering", "security", "deprecation", "worker", "violation", "other"], "description": "Log entry source." },
+                    { "name": "source", "type": "string", "enum": ["xml", "javascript", "network", "storage", "appcache", "rendering", "security", "deprecation", "worker", "violation", "intervention", "other"], "description": "Log entry source." },
                     { "name": "level", "type": "string", "enum": ["log", "warning", "error", "debug", "info"], "description": "Log entry severity." },
                     { "name": "text", "type": "string", "description": "Logged text." },
                     { "name": "timestamp", "$ref": "Runtime.Timestamp", "description": "Timestamp when this entry was added." },

third_party/WebKit/Source/devtools/front_end/sdk/ConsoleModel.js

@@ -498,10 +498,11 @@ SDK.ConsoleMessage.MessageSource = {
   Rendering: 'rendering',
   CSS: 'css',
   Security: 'security',
-  Violation: 'violation',
-  Other: 'other',
   Deprecation: 'deprecation',
-  Worker: 'worker'
+  Worker: 'worker',
+  Violation: 'violation',
+  Intervention: 'intervention',
+  Other: 'other'
 };
 
 /**