Created a DownloadManager interface, for use in unit tests..

chrome/browser/ui/webui/downloads_dom_handler.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/browser/ui/webui/downloads_dom_handler.h"
 
 #include <algorithm>
 #include <functional>
 
 #include "base/basictypes.h"
@@ skipping 106 matching lines @@
 
   // The original profile's download manager.
   DownloadManager* original_profile_download_manager_;
 };
 
 DownloadsDOMHandler::DownloadsDOMHandler(DownloadManager* dlm)
     : search_text_(),
       download_manager_(dlm),
       callback_factory_(ALLOW_THIS_IN_INITIALIZER_LIST(this)) {
   // Create our fileicon data source.
-  Profile::FromBrowserContext(dlm->browser_context())->
+  Profile::FromBrowserContext(dlm->BrowserContext())->
       GetChromeURLDataManager()->AddDataSource(
 #if defined(OS_CHROMEOS)
       new FileIconSourceCros());
 #else
       new FileIconSource());
 #endif  // OS_CHROMEOS
 }
 
 DownloadsDOMHandler::~DownloadsDOMHandler() {
   ClearDownloadItems();
   download_manager_->RemoveObserver(this);
 }
 
 // DownloadsDOMHandler, public: -----------------------------------------------
 
 void DownloadsDOMHandler::Init() {
   download_manager_->AddObserver(this);
 
   Profile* profile =
-      Profile::FromBrowserContext(download_manager_->browser_context());
+      Profile::FromBrowserContext(download_manager_->BrowserContext());
   Profile* original_profile = profile->GetOriginalProfile();
   if (original_profile != profile) {
     original_download_manager_observer_.reset(
         new OriginalDownloadManagerObserver(this, original_profile));
   }
 }
 
 void DownloadsDOMHandler::RegisterMessages() {
   web_ui_->RegisterMessageCallback("getDownloads",
       base::Bind(&DownloadsDOMHandler::HandleGetDownloads,
@@ skipping 60 matching lines @@
 }
 
 // A download has started or been deleted. Query our DownloadManager for the
 // current set of downloads.
 void DownloadsDOMHandler::ModelChanged() {
   ClearDownloadItems();
   download_manager_->SearchDownloads(WideToUTF16(search_text_),
                                      &download_items_);
   // If we have a parent profile, let it add its downloads to the results.
   Profile* profile =
-      Profile::FromBrowserContext(download_manager_->browser_context());
+      Profile::FromBrowserContext(download_manager_->BrowserContext());
   if (profile->GetOriginalProfile() != profile) {
     DownloadServiceFactory::GetForProfile(
         profile->GetOriginalProfile())->GetDownloadManager()->SearchDownloads(
             WideToUTF16(search_text_), &download_items_);
   }
 
   sort(download_items_.begin(), download_items_.end(), DownloadItemSorter());
 
   // Remove any extension downloads.
   for (size_t i = 0; i < download_items_.size();) {
@@ skipping 100 matching lines @@
   DownloadItem* file = GetDownloadByValue(args);
   if (file)
     file->Cancel(true);
 }
 
 void DownloadsDOMHandler::HandleClearAll(const ListValue* args) {
   CountDownloadsDOMEvents(DOWNLOADS_DOM_EVENT_CLEAR_ALL);
   download_manager_->RemoveAllDownloads();
 
   Profile* profile =
-      Profile::FromBrowserContext(download_manager_->browser_context());
+      Profile::FromBrowserContext(download_manager_->BrowserContext());
   // If this is an incognito downloader, clear All should clear main download
   // manager as well.
   if (profile->GetOriginalProfile() != profile)
     DownloadServiceFactory::GetForProfile(
         profile->GetOriginalProfile())->
             GetDownloadManager()->RemoveAllDownloads();
 }
 
 void DownloadsDOMHandler::HandleOpenDownloadsFolder(const ListValue* args) {
   CountDownloadsDOMEvents(DOWNLOADS_DOM_EVENT_OPEN_FOLDER);
@@ skipping 40 matching lines @@
   return NULL;
 }
 
 DownloadItem* DownloadsDOMHandler::GetDownloadByValue(const ListValue* args) {
   int id;
   if (ExtractIntegerValue(args, &id)) {
     return GetDownloadById(id);
   }
   return NULL;
 }