[ICU] Avoid reading ICU data files in render process.

base/i18n/icu_util.cc

Index: base/i18n/icu_util.cc
diff --git a/base/i18n/icu_util.cc b/base/i18n/icu_util.cc
index 6001ea10d050e502b07b8c53b71c493a0e5956f9..320c16d4e1b9ba88cbd787eb1a8b5df05b3c0c2e 100644
--- a/base/i18n/icu_util.cc
+++ b/base/i18n/icu_util.cc
@@ -55,6 +55,33 @@ bool g_check_called_once = true;
 #endif
 }
 
+
+#if defined(OS_ANDROID)
+bool InitializeICU(int data_fd) {
+#if !defined(NDEBUG)
+  DCHECK(!g_check_called_once || !g_called_once);
+  g_called_once = true;
+#endif
+
+  #if (ICU_UTIL_DATA_IMPL == ICU_UTIL_DATA_STATIC)

[jungshik at Google, 2014/06/06 23:07:50]

nit: intentation

+  // The ICU data is statically linked.
+  return true;
+#elif (ICU_UTIL_DATA_IMPL == ICU_UTIL_DATA_FILE)
+  CR_DEFINE_STATIC_LOCAL(base::MemoryMappedFile, mapped_file, ());
+  if (!mapped_file.IsValid()) {
+    if (!mapped_file.Initialize(base::File(data_fd))) {
+      LOG(ERROR) << "Couldn't mmap icu data file";
+      return false;
+    }
+  }
+  UErrorCode err = U_ZERO_ERROR;
+  udata_setCommonData(const_cast<uint8*>(mapped_file.data()), &err);
+  return err == U_ZERO_ERROR;
+#endif // ICU_UTIL_DATA_FILE
+}
+#endif
+
+
 bool InitializeICU() {
 #if !defined(NDEBUG)
   DCHECK(!g_check_called_once || !g_called_once);