ime: Support other underline styles in SetCompositionRange.

Other styles need to be supported for certain decoders.

Bug: 973354
Change-Id: I3067c4e0ede74c9f0f2b09542ec4afbbf6e22e83
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1692222Reviewed-by: Shu Chen <shuchen@chromium.org>
Commit-Queue: Darren Shen <shend@chromium.org>
Cr-Commit-Position: refs/heads/master@{#676294}

chrome/browser/chromeos/extensions/input_method_api.cc

@@ -410,6 +410,14 @@ InputMethodPrivateSetCompositionRangeFunction::Run() {
           case input_method_private::UNDERLINE_STYLE_UNDERLINE:
             segment_info.style = InputMethodEngineBase::SEGMENT_STYLE_UNDERLINE;
             break;
+          case input_method_private::UNDERLINE_STYLE_DOUBLEUNDERLINE:
+            segment_info.style =
+                InputMethodEngineBase::SEGMENT_STYLE_DOUBLE_UNDERLINE;
+            break;
+          case input_method_private::UNDERLINE_STYLE_NOUNDERLINE:
+            segment_info.style =
+                InputMethodEngineBase::SEGMENT_STYLE_NO_UNDERLINE;
+            break;
           case input_method_private::UNDERLINE_STYLE_NONE:
             EXTENSION_FUNCTION_VALIDATE(false);
             break;

chrome/common/extensions/api/input_method_private.json

@@ -37,7 +37,7 @@
         "id": "UnderlineStyle",
         "type": "string",
         "description": "The type of the underline to modify a composition segment.",
-        "enum": ["underline"]
+        "enum": ["underline", "doubleUnderline", "noUnderline"]
       },
       {
         "id": "FocusReason",