Update SplitString calls to new form

ui/base/ime/input_method_auralinux_unittest.cc

Index: ui/base/ime/input_method_auralinux_unittest.cc
diff --git a/ui/base/ime/input_method_auralinux_unittest.cc b/ui/base/ime/input_method_auralinux_unittest.cc
index 5c4afc53535bfc6051e54c85d64a860bc40b7179..2cd15008b9df173d75046f30a3e902a3e5e4c9b7 100644
--- a/ui/base/ime/input_method_auralinux_unittest.cc
+++ b/ui/base/ime/input_method_auralinux_unittest.cc
@@ -87,8 +87,9 @@ class LinuxInputMethodContextForTesting : public LinuxInputMethodContext {
     }
 
     for (const auto& action : actions_) {
-      std::vector<base::string16> parts;
-      base::SplitString(action, L':', &parts);
+      std::vector<base::string16> parts = base::SplitString(
+          action, base::string16(1, ':'), base::TRIM_WHITESPACE,
+          base::SPLIT_WANT_ALL);
       base::char16 id = parts[0][0];
       base::string16 param;
       if (parts.size() > 1)