Add support for persisting CompositionUnderlines in InputMethodController

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

Index: third_party/WebKit/Source/core/editing/InputMethodController.cpp
diff --git a/third_party/WebKit/Source/core/editing/InputMethodController.cpp b/third_party/WebKit/Source/core/editing/InputMethodController.cpp
index dbe4b6d7fc5e59efaede8a673e21fa99e854260d..f801bf743bd475a4b7f973c82d084f009c8830ee 100644
--- a/third_party/WebKit/Source/core/editing/InputMethodController.cpp
+++ b/third_party/WebKit/Source/core/editing/InputMethodController.cpp
@@ -346,7 +346,8 @@ void InputMethodController::addCompositionUnderlines(
 
     document().markers().addCompositionMarker(
         ephemeralLineRange.startPosition(), ephemeralLineRange.endPosition(),
-        underline.color(), underline.thick(), underline.backgroundColor());
+        underline.color(), underline.thick(), underline.backgroundColor(),
+        underline.persist());
   }
 }
 
@@ -611,7 +612,8 @@ void InputMethodController::setComposition(
     document().markers().addCompositionMarker(
         m_compositionRange->startPosition(), m_compositionRange->endPosition(),
         Color::black, false,
-        LayoutTheme::theme().platformDefaultCompositionBackgroundColor());
+        LayoutTheme::theme().platformDefaultCompositionBackgroundColor(),
+        false);
     return;
   }
 
@@ -626,7 +628,8 @@ void InputMethodController::setComposition(
       continue;
     document().markers().addCompositionMarker(
         ephemeralLineRange.startPosition(), ephemeralLineRange.endPosition(),
-        underline.color(), underline.thick(), underline.backgroundColor());
+        underline.color(), underline.thick(), underline.backgroundColor(),
+        underline.persist());
   }
 }