mandoline: Reland "Fix ICU initialization".

mojo/runner/init.cc

 // Copyright 2013 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 "mojo/runner/init.h"
 
 #include "base/base_switches.h"
 #include "base/command_line.h"
 #include "base/debug/debugger.h"
 #include "base/files/file_path.h"
+#include "base/i18n/icu_util.h"
 #include "base/logging.h"
 #include "base/stl_util.h"
 #include "base/strings/string_split.h"
 #include "base/strings/utf_string_conversions.h"
 #include "mojo/runner/host/switches.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #elif (OS_POSIX)
 #include <unistd.h>
@@ skipping 32 matching lines @@
       base::string16 appw = base::UTF8ToUTF16(app);
       MessageBox(NULL, appw.c_str(), appw.c_str(), MB_OK | MB_SETFOREGROUND);
 #else
       LOG(ERROR) << app << " waiting for GDB. pid: " << getpid();
       base::debug::WaitForDebugger(60, true);
 #endif
     }
   }
 }
 
+void CallLibraryEarlyInitialization(base::NativeLibrary app_library) {
+  // Do whatever warming that the mojo application wants.
+  typedef void (*LibraryEarlyInitFunction)(const uint8*);
+  LibraryEarlyInitFunction init_function =
+      reinterpret_cast<LibraryEarlyInitFunction>(
+          base::GetFunctionPointerFromNativeLibrary(app_library,
+                                                    "InitializeBase"));
+  if (init_function) {
+    // Get the ICU data that we prewarmed in the runner and then pass it to
+    // the copy of icu in the mojo binary that we're running.
+    const uint8* icu_data = base::i18n::GetRawIcuMemory();
+    init_function(icu_data);
+  }
+
+  // TODO(erg): All chromium binaries load base. We might want to make a
+  // general system for other people.
+}
+
 }  // namespace runner
 }  // namespace mojo