Create RenderFrameProxyHost at time of swap-out instead of commit.

content/renderer/accessibility/renderer_accessibility_browsertest.cc

Index: content/renderer/accessibility/renderer_accessibility_browsertest.cc
diff --git a/content/renderer/accessibility/renderer_accessibility_browsertest.cc b/content/renderer/accessibility/renderer_accessibility_browsertest.cc
index f1b559b4ae504f1d1662c142f0076695e8698a5d..b8bd5de39911b91d7b60a494d1763ef94d957416 100644
--- a/content/renderer/accessibility/renderer_accessibility_browsertest.cc
+++ b/content/renderer/accessibility/renderer_accessibility_browsertest.cc
@@ -304,6 +304,7 @@ TEST_F(RendererAccessibilityTest,
       "  <p>Hello, world.</p>"
       "</body>";
   LoadHTML(html.c_str());
+  static const int kProxyRoutingId = 13;
 
   // Creating a RendererAccessibilityComplete should send the tree
   // to the browser.
@@ -321,7 +322,7 @@ TEST_F(RendererAccessibilityTest,
   accessibility->HandleAXEvent(
       root_obj,
       ui::AX_EVENT_VALUE_CHANGED);
-  view()->main_render_frame()->OnSwapOut();
+  view()->main_render_frame()->OnSwapOut(kProxyRoutingId);
   accessibility->SendPendingAccessibilityEvents();
   EXPECT_FALSE(sink_->GetUniqueMessageMatching(
       AccessibilityHostMsg_Events::ID));