Save memory in the downloads extension API.

chrome/browser/extensions/api/downloads/downloads_api_unittest.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 <algorithm>
 
 #include "base/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/json/json_reader.h"
 #include "base/message_loop.h"
@@ skipping 246 matching lines @@
     // and DOWNLOAD_DANGER_TYPE_DANGEROUS_CONTENT.
     content::DownloadDangerType danger_type;
   };
 
   void LoadExtension(const char* name) {
     // Store the created Extension object so that we can attach it to
     // ExtensionFunctions.  Also load the extension in incognito profiles for
     // testing incognito.
     extension_ = LoadExtensionIncognito(test_data_dir_.AppendASCII(name));
     CHECK(extension_);
+    content::WebContents* tab = chrome::AddSelectedTabWithURL(
+        current_browser(),
+        extension_->GetResourceURL("empty.html"),
+        content::PAGE_TRANSITION_LINK);
+    extensions::ExtensionSystem::Get(current_browser()->profile())->
+      event_router()->AddEventListener(
+          extensions::event_names::kOnDownloadCreated,
+          tab->GetRenderProcessHost(),
+          GetExtensionId());
+    extensions::ExtensionSystem::Get(current_browser()->profile())->
+      event_router()->AddEventListener(
+          extensions::event_names::kOnDownloadChanged,
+          tab->GetRenderProcessHost(),
+          GetExtensionId());
+    extensions::ExtensionSystem::Get(current_browser()->profile())->
+      event_router()->AddEventListener(
+          extensions::event_names::kOnDownloadErased,
+          tab->GetRenderProcessHost(),
+          GetExtensionId());
   }
 
   content::RenderProcessHost* AddFilenameDeterminer() {
     content::WebContents* tab = chrome::AddSelectedTabWithURL(
         current_browser(),
         extension_->GetResourceURL("empty.html"),
         content::PAGE_TRANSITION_LINK);
     extensions::ExtensionSystem::Get(current_browser()->profile())->
       event_router()->AddEventListener(
           extensions::event_names::kOnDownloadDeterminingFilename,
@@ skipping 600 matching lines @@
 };
 
 bool ItemIsInterrupted(DownloadItem* item) {
   return item->IsInterrupted();
 }
 
 }  // namespace
 
 IN_PROC_BROWSER_TEST_F(DownloadExtensionTest,
                        DownloadExtensionTest_Open) {
+  LoadExtension("downloads_split");
   EXPECT_STREQ(download_extension_errors::kInvalidOperationError,
                RunFunctionAndReturnError(
                    new DownloadsOpenFunction(),
                    "[-42]").c_str());
 
   DownloadItem* download_item = CreateSlowTestDownload();
   ASSERT_TRUE(download_item);
   EXPECT_FALSE(download_item->GetOpened());
   EXPECT_FALSE(download_item->GetOpenWhenComplete());
   ASSERT_TRUE(WaitFor(events::kOnDownloadCreated,
@@ skipping 2353 matching lines @@
                          "  \"state\": {"
                          "    \"previous\": \"in_progress\","
                          "    \"current\": \"complete\"}}]",
                          item->GetId(),
                          GetFilename("42.txt.crdownload").c_str(),
                          GetFilename("42.txt").c_str())));
 }
 
 // TODO(benjhayden) Figure out why DisableExtension() does not fire
 // OnListenerRemoved.