Initialize content scripts the same way extension scripts are.

chrome/renderer/extensions/event_bindings.cc

 // Copyright (c) 2011 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/renderer/extensions/event_bindings.h"
 
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/lazy_instance.h"
 #include "base/message_loop.h"
 #include "chrome/common/extensions/extension_messages.h"
 #include "chrome/common/extensions/extension_set.h"
 #include "chrome/common/url_constants.h"
+#include "chrome/renderer/chrome_render_process_observer.h"
 #include "chrome/renderer/extensions/bindings_utils.h"
 #include "chrome/renderer/extensions/event_bindings.h"
 #include "chrome/renderer/extensions/extension_dispatcher.h"
 #include "chrome/renderer/extensions/extension_process_bindings.h"
 #include "chrome/renderer/extensions/js_only_v8_extensions.h"
 #include "chrome/renderer/extensions/user_script_slave.h"
 #include "content/renderer/render_thread.h"
 #include "content/renderer/render_view.h"
 #include "content/renderer/v8_value_converter.h"
 #include "googleurl/src/gurl.h"
@@ skipping 306 matching lines @@
       // so we give a fake extension id;
       extension_id = kTestingExtensionId;
     }
 
     persistent_context = v8::Persistent<v8::Context>::New(context);
   }
 
   contexts.push_back(linked_ptr<ContextInfo>(
       new ContextInfo(persistent_context, main_world_context, extension_id)));
 
-  // Content scripts get initialized in user_script_slave.cc.
-  if (!content_script) {
-    v8::HandleScope handle_scope;
-    v8::Handle<v8::Value> argv[1];
-    argv[0] = v8::String::New(extension_id.c_str());
-    CallFunctionInContext(context, "dispatchOnLoad", arraysize(argv), argv);
-  }
+  v8::HandleScope handle_scope;
+  v8::Handle<v8::Value> argv[3];
+  argv[0] = v8::String::New(extension_id.c_str());
+  argv[1] = v8::Boolean::New(extension_dispatcher->is_extension_process());
+  argv[2] = v8::Boolean::New(
+      ChromeRenderProcessObserver::is_incognito_process());
+  CallFunctionInContext(context, "dispatchOnLoad", arraysize(argv), argv);
 }
 
 // static
 void EventBindings::HandleContextDestroyed(WebFrame* frame) {
   if (!bindings_registered)
     return;
 
   v8::HandleScope handle_scope;
   v8::Local<v8::Context> context = frame->mainWorldScriptContext();
 
@@ skipping 74 matching lines @@
     // TODO(rafaelw): Consider only doing this check if function_name ==
     // "Event.dispatchJSON".
 #ifndef NDEBUG
     if (!retval.IsEmpty() && !retval->IsUndefined()) {
       std::string error = *v8::String::AsciiValue(retval);
       DCHECK(false) << error;
     }
 #endif
   }
 }