Create an external source for extensions on linux that meets the needs of package managers.

chrome/common/chrome_paths.cc

Index: chrome/common/chrome_paths.cc
diff --git a/chrome/common/chrome_paths.cc b/chrome/common/chrome_paths.cc
index 6d4849e8e10e5c31de9dba9c3c3f59b02c520ce1..c88ce1025e0f8a68f3e586800314ee4835586647 100644
--- a/chrome/common/chrome_paths.cc
+++ b/chrome/common/chrome_paths.cc
@@ -71,6 +71,19 @@ const FilePath::CharType kGTalkPluginFileName[] =
     FILE_PATH_LITERAL("pepper/libppgoogletalk.so");
 
 #endif  // defined(OS_POSIX) && !defined(OS_MACOSX)
+
+#if defined(OS_LINUX)

[Finnur, 2012/04/24 13:03:24]

... and not OS_CHROMEOS ?

[Alexandre Abreu, 2012/04/24 19:30:30]

Done.

+// The search path that contains information about per-extension
+// definition 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

[Finnur, 2012/04/24 13:03:24]

missing:  // defined(GOOGLE_CHROME_BUILD)

[Alexandre Abreu, 2012/04/24 19:30:30]

Done.

+#endif  // defined(OS_LINUX)

[Finnur, 2012/04/24 13:03:24]

... and not OS_CHROMEOS ?

[Alexandre Abreu, 2012/04/24 19:30:30]

Done.

+
 }  // namespace
 
 namespace chrome {
@@ -361,6 +374,12 @@ bool PathProvider(int key, FilePath* result) {
       break;
     }
 #endif
+#if defined(OS_LINUX)

[Finnur, 2012/04/24 13:03:24]

Ditto.

[Alexandre Abreu, 2012/04/24 19:30:30]

Done.

+    case chrome::DIR_SINGLE_EXTERNAL_EXTENSIONS: {
+      cur = FilePath(FILE_PATH_LITERAL(kFilepathSinglePrefExtensions));
+      break;
+    }
+#endif
     case chrome::DIR_EXTERNAL_EXTENSIONS:
 #if defined(OS_MACOSX)
       if (!chrome::GetGlobalApplicationSupportDirectory(&cur))