<chromium> Add a hook to provide our own icu data file path

Qt will always use QLibraryInfo to determine where this file was
installed, regardless of the platform.

Change-Id: I79374655356d872b2bc766ec8a33fcba343e9c95
Reviewed-by: Andras Becsi <andras.becsi@digia.com>

chromium/base/base_paths.h

@@ -47,6 +47,8 @@ enum BasePathKey {
 
   DIR_TEST_DATA,     // Used only for testing.
 
+  DIR_QT_LIBRARY_DATA,
+
   PATH_END
 };
 

chromium/base/i18n/icu_util.cc

@@ -121,7 +121,12 @@ bool InitializeICU() {
   // be released.
   CR_DEFINE_STATIC_LOCAL(base::MemoryMappedFile, mapped_file, ());
   if (!mapped_file.IsValid()) {
-#if !defined(OS_MACOSX)
+#if defined(TOOLKIT_QT)
+    FilePath data_path;
+    bool path_ok = PathService::Get(base::DIR_QT_LIBRARY_DATA, &data_path);
+    DCHECK(path_ok);
+    data_path = data_path.AppendASCII(ICU_UTIL_DATA_FILE_NAME);
+#elif !defined(OS_MACOSX)
     FilePath data_path;
 #if defined(OS_WIN)
     // The data file will be in the same directory as the current module.