Introduce InsertIncrementalTextCommand to respect existing style for composition

third_party/WebKit/Source/web/tests/WebViewTest.cpp

 /*
  * Copyright (C) 2011, 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 1261 matching lines @@
   WebViewImpl* webView =
       m_webViewHelper.initializeAndLoad(m_baseURL + "form_with_input.html");
   webView->resize(WebSize(800, 600));
   webView->setInitialFocus(false);
   EXPECT_EQ(0, webView->mainFrame()->scrollOffset().width);
   EXPECT_EQ(0, webView->mainFrame()->scrollOffset().height);
 
   // Set up a composition from existing text that needs to be committed.
   Vector<CompositionUnderline> emptyUnderlines;
   WebLocalFrameImpl* frame = webView->mainFrameImpl();
   frame->frame()->inputMethodController().setCompositionFromExistingText(

[yabinh, 2016/11/25 04:36:27]

Note that the parameter is the composition range. So [3,3] doesn't make any
sense.

-      emptyUnderlines, 3, 3);
+      emptyUnderlines, 0, 3);
 
   // Scroll the input field out of the viewport.
   Element* element = static_cast<Element*>(
       webView->mainFrame()->document().getElementById("btn"));
   element->scrollIntoView();
   float offsetHeight = webView->mainFrame()->scrollOffset().height;
   EXPECT_EQ(0, webView->mainFrame()->scrollOffset().width);
   EXPECT_LT(0, offsetHeight);
 
   WebTextInputInfo info = webView->textInputInfo();
@@ skipping 3061 matching lines @@
       .translate(50, 55)
       .scale(1. / 2.f);
   EXPECT_EQ(expectedMatrix,
             webViewImpl->getDeviceEmulationTransformForTesting());
   // visibleContentRect doesn't change.
   EXPECT_EQ(IntRect(50, 55, 50, 75),
             *devToolsEmulator->visibleContentRectForPainting());
 }
 
 }  // namespace blink