Introduces an additional extension loader that load extra extensions based on per-extension json fi…

chrome/common/chrome_paths.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/common/chrome_paths.h"
 
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/mac/bundle_locations.h"
@@ skipping 53 matching lines @@
 
 #if defined(OS_POSIX) && !defined(OS_MACOSX)
 
 const FilePath::CharType kO3DPluginFileName[] =
     FILE_PATH_LITERAL("pepper/libppo3dautoplugin.so");
 
 const FilePath::CharType kGTalkPluginFileName[] =
     FILE_PATH_LITERAL("pepper/libppgoogletalk.so");
 
 #endif  // defined(OS_POSIX) && !defined(OS_MACOSX)
+
+#if defined(OS_LINUX) && !defined(OS_CHROMEOS)
+// The path to the external extension <id>.json files.
+// /usr/share seems like a good choice, see: http://www.pathname.com/fhs/
+const char kFilepathSinglePrefExtensions[] =
+#if defined(GOOGLE_CHROME_BUILD)
+    FILE_PATH_LITERAL("/usr/share/google-chrome/extensions");
+#else
+    FILE_PATH_LITERAL("/usr/share/chromium/extensions");
+#endif  // defined(GOOGLE_CHROME_BUILD)
+#endif  // defined(OS_LINUX) && !defined(OS_CHROMEOS)
+
 }  // namespace
 
 namespace chrome {
 
 // Gets the path for internal plugins.
 bool GetInternalPluginsDirectory(FilePath* result) {
 #if defined(OS_MACOSX)
   // If called from Chrome, get internal plugins from a subdirectory of the
   // framework.
   if (base::mac::AmIBundled()) {
@@ skipping 270 matching lines @@
     }
 #endif
 #if defined(OS_CHROMEOS) || defined(OS_MACOSX)
     case chrome::DIR_USER_EXTERNAL_EXTENSIONS: {
       if (!PathService::Get(chrome::DIR_USER_DATA, &cur))
         return false;
       cur = cur.Append(FILE_PATH_LITERAL("External Extensions"));
       break;
     }
 #endif
+#if defined(OS_LINUX) && !defined(OS_CHROMEOS)
+    case chrome::DIR_STANDALONE_EXTERNAL_EXTENSIONS: {
+      cur = FilePath(FILE_PATH_LITERAL(kFilepathSinglePrefExtensions));
+      break;
+    }
+#endif
     case chrome::DIR_EXTERNAL_EXTENSIONS:
 #if defined(OS_MACOSX)
       if (!chrome::GetGlobalApplicationSupportDirectory(&cur))
         return false;
 
       cur = cur.Append(FILE_PATH_LITERAL("Google"))
                .Append(FILE_PATH_LITERAL("Chrome"))
                .Append(FILE_PATH_LITERAL("External Extensions"));
       create_dir = false;
 #else
@@ skipping 28 matching lines @@
   return true;
 }
 
 // This cannot be done as a static initializer sadly since Visual Studio will
 // eliminate this object file if there is no direct entry point into it.
 void RegisterPathProvider() {
   PathService::RegisterProvider(PathProvider, PATH_START, PATH_END);
 }
 
 }  // namespace chrome