Fix a bug where the inspector would not keep event pages alive.

content/browser/debugger/render_view_devtools_agent_host.cc

Index: content/browser/debugger/render_view_devtools_agent_host.cc
diff --git a/content/browser/debugger/render_view_devtools_agent_host.cc b/content/browser/debugger/render_view_devtools_agent_host.cc
index 4f7313870d4864571a08994d75fedc4f6ff890fd..849f272a32e003826c45330bf3760ad48a0ec7c1 100644
--- a/content/browser/debugger/render_view_devtools_agent_host.cc
+++ b/content/browser/debugger/render_view_devtools_agent_host.cc
@@ -77,9 +77,14 @@ RenderViewDevToolsAgentHost::RenderViewDevToolsAgentHost(
     : content::RenderViewHostObserver(rvh),
       render_view_host_(rvh) {
   g_instances.Get()[rvh] = this;
+}
+
+void RenderViewDevToolsAgentHost::SendMessageToAgent(IPC::Message* msg) {
+  msg->set_routing_id(render_view_host_->GetRoutingID());
+  render_view_host_->Send(msg);
+}
 
-  // Notify that the view is being opened. This allows any views being debugged
-  // to do anything special they need to do to support debugging.
+void RenderViewDevToolsAgentHost::NotifyClientOpening() {
   content::NotificationService::current()->Notify(
       content::NOTIFICATION_DEVTOOLS_WINDOW_OPENING,
       content::Source<content::BrowserContext>(
@@ -88,11 +93,6 @@ RenderViewDevToolsAgentHost::RenderViewDevToolsAgentHost(
       content::Details<RenderViewHost>(render_view_host_));
 }
 
-void RenderViewDevToolsAgentHost::SendMessageToAgent(IPC::Message* msg) {
-  msg->set_routing_id(render_view_host_->GetRoutingID());
-  render_view_host_->Send(msg);
-}
-
 void RenderViewDevToolsAgentHost::NotifyClientClosing() {
   content::NotificationService::current()->Notify(
       content::NOTIFICATION_DEVTOOLS_WINDOW_CLOSING,