Revert "[DevTools] Make log agent optional."

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

Index: third_party/WebKit/Source/devtools/front_end/sdk/TargetManager.js
diff --git a/third_party/WebKit/Source/devtools/front_end/sdk/TargetManager.js b/third_party/WebKit/Source/devtools/front_end/sdk/TargetManager.js
index af44b7f719a68d3177e3c1f11f961e00cc75f79d..b816983cfb5cb599025c47b20ba6fd7a26216fc7 100644
--- a/third_party/WebKit/Source/devtools/front_end/sdk/TargetManager.js
+++ b/third_party/WebKit/Source/devtools/front_end/sdk/TargetManager.js
@@ -190,10 +190,8 @@ WebInspector.TargetManager.prototype = {
     {
         var target = new WebInspector.Target(this, name, capabilitiesMask, connection, parentTarget);
 
-        var logAgent = target.hasBrowserCapability() ? target.logAgent() : null;
-
         /** @type {!WebInspector.ConsoleModel} */
-        target.consoleModel = new WebInspector.ConsoleModel(target, logAgent);
+        target.consoleModel = new WebInspector.ConsoleModel(target);
         /** @type {!WebInspector.RuntimeModel} */
         target.runtimeModel = new WebInspector.RuntimeModel(target);