Change default force composite setting to true

Source/web/WebSharedWorkerImpl.cpp

Index: Source/web/WebSharedWorkerImpl.cpp
diff --git a/Source/web/WebSharedWorkerImpl.cpp b/Source/web/WebSharedWorkerImpl.cpp
index 8abbaa734ef24bd186600875d36d55c5a959b56d..bbd78a1a2ae54a6d24112033c8dc4a285313026c 100644
--- a/Source/web/WebSharedWorkerImpl.cpp
+++ b/Source/web/WebSharedWorkerImpl.cpp
@@ -191,6 +191,9 @@ void WebSharedWorkerImpl::initializeLoader(const WebURL& url)
     ASSERT(!m_webView);
     m_webView = WebView::create(0);
     m_webView->settings()->setOfflineWebApplicationCacheEnabled(RuntimeEnabledFeatures::applicationCacheEnabled());
+    // FIXME: http://crbug.com/363843. This needs to find a better way to
+    // not create graphics layers.
+    m_webView->settings()->setAcceleratedCompositingEnabled(false);
     // FIXME: Settings information should be passed to the Worker process from Browser process when the worker
     // is created (similar to RenderThread::OnCreateNewView).
     m_mainFrame = WebLocalFrame::create(this);