Avoid reporting space as NBSP in TextInputState.

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

Index: third_party/WebKit/Source/core/editing/InputMethodControllerTest.cpp
diff --git a/third_party/WebKit/Source/core/editing/InputMethodControllerTest.cpp b/third_party/WebKit/Source/core/editing/InputMethodControllerTest.cpp
index 106b8accaecba1c089f187bc5c12753109d12a26..bfe3c029986e578f541348a606be30d20e6c3403 100644
--- a/third_party/WebKit/Source/core/editing/InputMethodControllerTest.cpp
+++ b/third_party/WebKit/Source/core/editing/InputMethodControllerTest.cpp
@@ -1169,6 +1169,20 @@ TEST_F(InputMethodControllerTest, FinishCompositionRemovedRange) {
   EXPECT_EQ(WebTextInputTypeTelephone, controller().textInputType());
 }
 
+TEST_F(InputMethodControllerTest, ReflectsSpaceWithoutNbspMangling) {
+  insertHTMLElement("<div id='sample' contenteditable></div>", "sample");
+
+  Vector<CompositionUnderline> underlines;
+  controller().commitText(String("  "), underlines, 0);
+
+  // In a contenteditable, multiple spaces or spaces at the edge need to be nbsp

[yosin_UTC9, 2017/01/25 03:41:23]

In a contenteditable, multiple spaces or spaces at the edge need to be nbsp
.........................................^^^^^^ "a space"?

+  // to affect layout properly, but it confuses some IMEs (particularly
+  // Vietnamese, see crbug.com/663880) to have their spaces reflected back to
+  // them as nbsp.
+  EXPECT_EQ(' ', controller().textInputInfo().value.ascii()[0]);
+  EXPECT_EQ(' ', controller().textInputInfo().value.ascii()[1]);
+}
+
 TEST_F(InputMethodControllerTest, SetCompositionPlainTextWithUnderline) {
   insertHTMLElement("<div id='sample' contenteditable></div>", "sample");