Fix WeakPtrFactory member ordering in content

content/renderer/accessibility/renderer_accessibility_complete.cc

Index: content/renderer/accessibility/renderer_accessibility_complete.cc
diff --git a/content/renderer/accessibility/renderer_accessibility_complete.cc b/content/renderer/accessibility/renderer_accessibility_complete.cc
index 66d750951f3a55430fb44a2714a09fc9b6eba690..6c4cc9245c7630b2bf1fbdd413549fee9cc41e28 100644
--- a/content/renderer/accessibility/renderer_accessibility_complete.cc
+++ b/content/renderer/accessibility/renderer_accessibility_complete.cc
@@ -35,11 +35,11 @@ namespace content {
 RendererAccessibilityComplete::RendererAccessibilityComplete(
     RenderFrameImpl* render_frame)
     : RendererAccessibility(render_frame),
-      weak_factory_(this),
       tree_source_(render_frame),
       serializer_(&tree_source_),
       last_scroll_offset_(gfx::Size()),
-      ack_pending_(false) {
+      ack_pending_(false),
+      weak_factory_(this) {
   WebView* web_view = render_frame_->GetRenderView()->GetWebView();
   WebSettings* settings = web_view->settings();
   settings->setAccessibilityEnabled(true);