DevTools: preserve focus on activating dev tools window.

chrome/browser/renderer_host/render_view_host.cc

Index: chrome/browser/renderer_host/render_view_host.cc
===================================================================
--- chrome/browser/renderer_host/render_view_host.cc	(revision 19929)
+++ chrome/browser/renderer_host/render_view_host.cc	(working copy)
@@ -717,6 +717,8 @@
                         OnForwardToDevToolsAgent);
     IPC_MESSAGE_HANDLER(ViewHostMsg_ForwardToDevToolsClient,
                         OnForwardToDevToolsClient);
+    IPC_MESSAGE_HANDLER(ViewHostMsg_ActivateDevToolsWindow,
+                        OnActivateDevToolsWindow);
     IPC_MESSAGE_HANDLER(ViewHostMsg_CloseDevToolsWindow,
                         OnCloseDevToolsWindow);
     IPC_MESSAGE_HANDLER(ViewHostMsg_DockDevToolsWindow,
@@ -1192,6 +1194,10 @@
   DevToolsManager::GetInstance()->ForwardToDevToolsClient(this, message);
 }
 
+void RenderViewHost::OnActivateDevToolsWindow() {
+  DevToolsManager::GetInstance()->ActivateWindow(this);
+}
+
 void RenderViewHost::OnCloseDevToolsWindow() {
   DevToolsManager::GetInstance()->CloseWindow(this);
 }