Remove the forceCompositingMode setting.

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 1114 matching lines @@
 
     size_t location;
     size_t length;
     EXPECT_TRUE(toWebViewImpl(webView)->caretOrSelectionRange(&location, &length));
     EXPECT_EQ(location, 0UL);
     EXPECT_EQ(length, testWord.length());
 }
 
 static void configueCompositingWebView(WebSettings* settings)
 {
-    settings->setForceCompositingMode(true);
     settings->setAcceleratedCompositingEnabled(true);
     settings->setAcceleratedCompositingForFixedPositionEnabled(true);
     settings->setAcceleratedCompositingForOverflowScrollEnabled(true);
     settings->setCompositedScrollingForFramesEnabled(true);
 }
 
 TEST_F(WebViewTest, ShowPressOnTransformedLink)
 {
     OwnPtr<FrameTestHelpers::TestWebViewClient> fakeCompositingWebViewClient = adoptPtr(new FrameTestHelpers::TestWebViewClient());
     FrameTestHelpers::WebViewHelper webViewHelper;
@@ skipping 832 matching lines @@
 
     EXPECT_EQ(0, client.getUserGestureNotificationsCount());
 
     EXPECT_TRUE(tapElementById(webView, WebInputEvent::GestureTap, WebString::fromUTF8("target")));
 
     EXPECT_EQ(1, client.getUserGestureNotificationsCount());
     webView->setAutofillClient(0);
 }
 
 } // namespace