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

third_party/WebKit/Source/core/editing/InputMethodControllerTest.cpp

 // Copyright 2014 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 "core/editing/InputMethodController.h"
 
 #include "core/dom/Document.h"
 #include "core/dom/Element.h"
 #include "core/dom/Range.h"
 #include "core/editing/Editor.h"
@@ skipping 929 matching lines @@
       "  event => document.title += "
       "  `input.isComposing:${event.isComposing};`);");
   document().body()->appendChild(script);
   document().view()->updateAllLifecyclePhases();
 
   // Simulate composition in the |contentEditable|.
   Vector<CompositionUnderline> underlines;
   underlines.push_back(CompositionUnderline(0, 5, Color(255, 0, 0), false, 0));
   editable->focus();
 
-  document().setTitle(emptyString());
+  document().setTitle(emptyString);
   controller().setComposition("foo", underlines, 0, 3);
   EXPECT_STREQ("beforeinput.isComposing:true;input.isComposing:true;",
                document().title().utf8().data());
 
-  document().setTitle(emptyString());
+  document().setTitle(emptyString);
   controller().finishComposingText(InputMethodController::KeepSelection);
   // Last pair of InputEvent should also be inside composition scope.
   EXPECT_STREQ("beforeinput.isComposing:true;input.isComposing:true;",
                document().title().utf8().data());
 }
 
 TEST_F(InputMethodControllerTest, CompositionInputEventForReplace) {
   createHTMLWithCompositionInputEventListeners();
 
   // Simulate composition in the |contentEditable|.
   Vector<CompositionUnderline> underlines;
   underlines.push_back(CompositionUnderline(0, 5, Color(255, 0, 0), false, 0));
 
-  document().setTitle(emptyString());
+  document().setTitle(emptyString);
   controller().setComposition("hell", underlines, 4, 4);
   EXPECT_STREQ("beforeinput.data:hell;input.data:hell;",
                document().title().utf8().data());
 
   // Replace the existing composition.
-  document().setTitle(emptyString());
+  document().setTitle(emptyString);
   controller().setComposition("hello", underlines, 0, 0);
   EXPECT_STREQ("beforeinput.data:hello;input.data:hello;",
                document().title().utf8().data());
 }
 
 TEST_F(InputMethodControllerTest, CompositionInputEventForConfirm) {
   createHTMLWithCompositionInputEventListeners();
 
   // Simulate composition in the |contentEditable|.
   Vector<CompositionUnderline> underlines;
   underlines.push_back(CompositionUnderline(0, 5, Color(255, 0, 0), false, 0));
 
-  document().setTitle(emptyString());
+  document().setTitle(emptyString);
   controller().setComposition("hello", underlines, 5, 5);
   EXPECT_STREQ("beforeinput.data:hello;input.data:hello;",
                document().title().utf8().data());
 
   // Confirm the ongoing composition.
-  document().setTitle(emptyString());
+  document().setTitle(emptyString);
   controller().finishComposingText(InputMethodController::KeepSelection);
   EXPECT_STREQ(
       "beforeinput.data:hello;input.data:hello;compositionend.data:hello;",
       document().title().utf8().data());
 }
 
 TEST_F(InputMethodControllerTest, CompositionInputEventForDelete) {
   createHTMLWithCompositionInputEventListeners();
 
   // Simulate composition in the |contentEditable|.
   Vector<CompositionUnderline> underlines;
   underlines.push_back(CompositionUnderline(0, 5, Color(255, 0, 0), false, 0));
 
-  document().setTitle(emptyString());
+  document().setTitle(emptyString);
   controller().setComposition("hello", underlines, 5, 5);
   EXPECT_STREQ("beforeinput.data:hello;input.data:hello;",
                document().title().utf8().data());
 
   // Delete the existing composition.
-  document().setTitle(emptyString());
+  document().setTitle(emptyString);
   controller().setComposition("", underlines, 0, 0);
   EXPECT_STREQ("beforeinput.data:;compositionend.data:;",
                document().title().utf8().data());
 }
 
 TEST_F(InputMethodControllerTest, CompositionInputEventForInsert) {
   createHTMLWithCompositionInputEventListeners();
 
   // Simulate composition in the |contentEditable|.
   Vector<CompositionUnderline> underlines;
   underlines.push_back(CompositionUnderline(0, 5, Color(255, 0, 0), false, 0));
 
   // Insert new text without previous composition.
-  document().setTitle(emptyString());
+  document().setTitle(emptyString);
   document().updateStyleAndLayout();
   controller().commitText("hello", underlines, 0);
   EXPECT_STREQ("beforeinput.data:hello;input.data:hello;",
                document().title().utf8().data());
 
-  document().setTitle(emptyString());
+  document().setTitle(emptyString);
   controller().setComposition("n", underlines, 1, 1);
   EXPECT_STREQ("beforeinput.data:n;input.data:n;",
                document().title().utf8().data());
 
   // Insert new text with previous composition.
-  document().setTitle(emptyString());
+  document().setTitle(emptyString);
   document().updateStyleAndLayout();
   controller().commitText("hello", underlines, 1);
   EXPECT_STREQ(
       "beforeinput.data:hello;input.data:hello;compositionend.data:hello;",
       document().title().utf8().data());
 }
 
 TEST_F(InputMethodControllerTest, CompositionInputEventForInsertEmptyText) {
   createHTMLWithCompositionInputEventListeners();
 
   // Simulate composition in the |contentEditable|.
   Vector<CompositionUnderline> underlines;
   underlines.push_back(CompositionUnderline(0, 5, Color(255, 0, 0), false, 0));
 
   // Insert empty text without previous composition.
-  document().setTitle(emptyString());
+  document().setTitle(emptyString);
   document().updateStyleAndLayout();
   controller().commitText("", underlines, 0);
   EXPECT_STREQ("", document().title().utf8().data());
 
-  document().setTitle(emptyString());
+  document().setTitle(emptyString);
   controller().setComposition("n", underlines, 1, 1);
   EXPECT_STREQ("beforeinput.data:n;input.data:n;",
                document().title().utf8().data());
 
   // Insert empty text with previous composition.
-  document().setTitle(emptyString());
+  document().setTitle(emptyString);
   document().updateStyleAndLayout();
   controller().commitText("", underlines, 1);
   EXPECT_STREQ("beforeinput.data:;compositionend.data:;",
                document().title().utf8().data());
 }
 
 TEST_F(InputMethodControllerTest, CompositionEndEventWithNoSelection) {
   createHTMLWithCompositionEndEventListener(NoSelection);
 
   // Simulate composition in the |contentEditable|.
@@ skipping 91 matching lines @@
 
   controller().commitText(String("string"), underlines, 0);
 
   ASSERT_EQ(1u, document().markers().markers().size());
 
   EXPECT_EQ(9u, document().markers().markers()[0]->startOffset());
   EXPECT_EQ(15u, document().markers().markers()[0]->endOffset());
 }
 
 }  // namespace blink