Fix scrollIntoViewIfNeeded when scroll box has no height or width.

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 955 matching lines @@
     EXPECT_EQ(8, info.selectionStart);
     EXPECT_EQ(8, info.selectionEnd);
     EXPECT_EQ(-1, info.compositionStart);
     EXPECT_EQ(-1, info.compositionEnd);
 }
 
 TEST_F(WebViewTest, FinishCompositionDoesNotRevealSelection)
 {
     URLTestHelpers::registerMockedURLFromBaseURL(WebString::fromUTF8(m_baseURL.c_str()), WebString::fromUTF8("form_with_input.html"));
     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 = toWebLocalFrameImpl(webView->mainFrame());
     frame->frame()->inputMethodController().setCompositionFromExistingText(emptyUnderlines, 3, 3);
 
     // Scroll the input field out of the viewport.
@@ skipping 2289 matching lines @@
     frame->setAutofillClient(&client);
     webView->setInitialFocus(false);
 
     EXPECT_TRUE(webView->confirmComposition(WebString::fromUTF8(std::string("hello").c_str())));
     EXPECT_EQ(1, client.textChangesFromUserGesture());
     EXPECT_FALSE(UserGestureIndicator::processingUserGesture());
     frame->setAutofillClient(0);
 }
 
 } // namespace blink