Fix not autosizing ruby elements issue.

third_party/WebKit/Source/core/layout/TextAutosizerTest.cpp

 // Copyright 2016 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/layout/LayoutObject.h"
 #include "core/layout/LayoutTestHelper.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace blink {
 
@@ skipping 643 matching lines @@
       document().getElementById("longText")->layoutObject();
   EXPECT_FLOAT_EQ(16.f, longText->style()->specifiedFontSize());
   //(specified font-size = 16px) * (block width = 560px) /
   // (window width = 320px) = 28px.
   EXPECT_FLOAT_EQ(28.f, longText->style()->computedFontSize());
   LayoutObject* shortText =
       document().getElementById("shortText")->layoutObject();
   EXPECT_FLOAT_EQ(16.f, shortText->style()->specifiedFontSize());
   EXPECT_FLOAT_EQ(28.f, shortText->style()->computedFontSize());
 }
+
+TEST_F(TextAutosizerTest, AutosizeInnerContentOfRuby) {
+  setBodyInnerHTML(
+      "<meta name='viewport' content='width=800'>"
+      "<style>"
+      "  html { font-size: 16px; }"
+      "  body { width: 800px; margin: 0; overflow-y: hidden; }"
+      "</style>"
+      "<div id='autosized'>"
+      "    東京特許許可局許可局長　今日"
+      "    <ruby>"
+      "        <rb id='rubyInline'>急遽</rb>"
+      "        <rp>(</rp>"
+      "        <rt>きゅうきょ</rt>"
+      "        <rp>)</rp>"
+      "    </ruby>"
+      "    許可却下、<br><br>"
+      "    <span>"
+      "        Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec "
+      "        sed diam facilisis, elementum elit at, elementum sem. Aliquam "
+      "        consectetur leo at nisi fermentum, vitae maximus libero "
+      "sodales. Sed "
+      "        laoreet congue ipsum, at tincidunt ante tempor sed. Cras eget "
+      "erat "
+      "        mattis urna vestibulum porta. Sed tempus vitae dui et suscipit. "
+      "        Curabitur laoreet accumsan pharetra. Nunc facilisis, elit sit "
+      "amet "
+      "        sollicitudin condimentum, ipsum velit ultricies mi, eget "
+      "dapibus nunc "
+      "        nulla nec sapien. Fusce dictum imperdiet aliquet."
+      "    </span>"
+      "    <ruby style='display:block'>"
+      "        <rb id='rubyBlock'>拼音</rb>"
+      "        <rt>pin yin</rt>"
+      "    </ruby>"
+      "</div>");
+  document().view()->updateAllLifecyclePhases();
+
+  Element* rubyInline = document().getElementById("rubyInline");
+  EXPECT_FLOAT_EQ(16.f,
+                  rubyInline->layoutObject()->style()->specifiedFontSize());
+  // (specified font-size = 16px) * (viewport width = 800px) /
+  // (window width = 320px) = 40px.
+  EXPECT_FLOAT_EQ(40.f,
+                  rubyInline->layoutObject()->style()->computedFontSize());
+
+  Element* rubyBlock = document().getElementById("rubyBlock");
+  EXPECT_FLOAT_EQ(16.f,
+                  rubyBlock->layoutObject()->style()->specifiedFontSize());
+  // (specified font-size = 16px) * (viewport width = 800px) /
+  // (window width = 320px) = 40px.
+  EXPECT_FLOAT_EQ(40.f, rubyBlock->layoutObject()->style()->computedFontSize());
+}
 }  // namespace blink