Remove unneeded extension_messages_browsertest.cc + cleanup.

chrome/renderer/extensions/app_bindings.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/renderer/extensions/app_bindings.h"
 
 #include "base/command_line.h"
 #include "base/string16.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
@@ skipping 55 matching lines @@
   RouteFunction("GetDetails",
       base::Bind(&AppBindings::GetDetails, base::Unretained(this)));
   RouteFunction("GetDetailsForFrame",
       base::Bind(&AppBindings::GetDetailsForFrame, base::Unretained(this)));
   RouteFunction("GetAppNotifyChannel",
       base::Bind(&AppBindings::GetAppNotifyChannel, base::Unretained(this)));
 }
 
 v8::Handle<v8::Value> AppBindings::GetIsInstalled(
     const v8::Arguments& args) {
-  // TODO(aa): Hm, maybe ExtensionBindingsContext should have GetExtension()
-  // afterall?
-  const ::Extension* extension =
-      extension_dispatcher_->extensions()->GetByID(context_->extension_id());
+  const Extension* extension = context_->extension();
 
   // TODO(aa): Why only hosted app?
   bool result = extension && extension->is_hosted_app() &&
       extension_dispatcher_->IsExtensionActive(extension->id());
   return v8::Boolean::New(result);
 }
 
 v8::Handle<v8::Value> AppBindings::Install(const v8::Arguments& args) {
   content::RenderView* render_view = context_->GetRenderView();
   CHECK(render_view);
@@ skipping 110 matching lines @@
     const std::string& channel_id, const std::string& error, int callback_id) {
   v8::HandleScope handle_scope;
   v8::Context::Scope context_scope(context_->v8_context());
   v8::Handle<v8::Value> argv[3];
   argv[0] = v8::String::New(channel_id.c_str());
   argv[1] = v8::String::New(error.c_str());
   argv[2] = v8::Integer::New(callback_id);
   CHECK(context_->CallChromeHiddenMethod("app.onGetAppNotifyChannelResponse",
                                          arraysize(argv), argv, NULL));
 }