drive: Support authorizing third-party Drive apps for opening files.

chrome/browser/drive/drive_app_registry.cc

 // Copyright 2014 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/drive/drive_app_registry.h"
 
 #include <algorithm>
 #include <set>
 #include <utility>
 
 #include "base/callback.h"
 #include "base/files/file_path.h"
 #include "chrome/browser/drive/drive_service_interface.h"
 #include "content/public/browser/browser_thread.h"
 #include "google_apis/drive/drive_api_parser.h"
+#include "google_apis/google_api_keys.h"
 
 using content::BrowserThread;
 
 namespace {
 
 // Add {selector -> app_id} mapping to |map|.
 void AddAppSelectorList(const ScopedVector<std::string>& selectors,
                         const std::string& app_id,
                         std::multimap<std::string, std::string>* map) {
   for (size_t i = 0; i < selectors.size(); ++i)
@@ skipping 172 matching lines @@
   if (error == google_apis::HTTP_NO_CONTENT) {
     all_apps_.erase(app_id);
     RemoveAppFromSelector(app_id, &mimetype_map_);
     RemoveAppFromSelector(app_id, &extension_map_);
   }
   callback.Run(error);
 }
 
 // static
 bool DriveAppRegistry::IsAppUninstallSupported() {
-#ifdef USE_OFFICIAL_GOOGLE_API_KEYS
-  return true;
-#else
-  return false;
-#endif
+  return google_apis::IsGoogleChromeAPIKeyUsed();
 }
 
 namespace util {
 
 GURL FindPreferredIcon(const google_apis::InstalledApp::IconList& icons,
                        int preferred_size) {
   if (icons.empty())
     return GURL();
 
   google_apis::InstalledApp::IconList sorted_icons = icons;
   std::sort(sorted_icons.rbegin(), sorted_icons.rend());
 
   // Go forward while the size is larger or equal to preferred_size.
   size_t i = 1;
   while (i < sorted_icons.size() && sorted_icons[i].first >= preferred_size)
     ++i;
   return sorted_icons[i - 1].second;
 }
 
 }  // namespace util
 }  // namespace drive