Replace WTF::emptyString{16Bit}() with a static global

third_party/WebKit/Source/platform/fonts/SymbolsIteratorTest.cpp

Index: third_party/WebKit/Source/platform/fonts/SymbolsIteratorTest.cpp
diff --git a/third_party/WebKit/Source/platform/fonts/SymbolsIteratorTest.cpp b/third_party/WebKit/Source/platform/fonts/SymbolsIteratorTest.cpp
index 7b977e9f3ec04738c5f93ba837b3ca759541a3aa..c733ec9816dc11eafa7f8f33328dfad56512c91d 100644
--- a/third_party/WebKit/Source/platform/fonts/SymbolsIteratorTest.cpp
+++ b/third_party/WebKit/Source/platform/fonts/SymbolsIteratorTest.cpp
@@ -25,7 +25,7 @@ struct ExpectedRun {
 class SymbolsIteratorTest : public testing::Test {
  protected:
   void CheckRuns(const Vector<TestRun>& runs) {
-    String text(emptyString16Bit());
+    String text(emptyString16Bit);
     Vector<ExpectedRun> expect;
     for (auto& run : runs) {
       text.append(String::fromUTF8(run.text.c_str()));
@@ -61,7 +61,7 @@ class SymbolsIteratorTest : public testing::Test {
   CheckRuns(runs);
 
 TEST_F(SymbolsIteratorTest, Empty) {
-  String empty(emptyString16Bit());
+  String empty(emptyString16Bit);
   SymbolsIterator symbolsIterator(empty.characters16(), empty.length());
   unsigned limit = 0;
   FontFallbackPriority symbolsFont = FontFallbackPriority::Invalid;