Fix broken links on NaCl pages of developer.chrome.com.

native_client_sdk/src/doc/publications-and-presentations.rst

 .. _publications_and_presentations:
 
 ##############################
 Publications and Presentations
 ##############################
 
 This page lists Native Client and Portable Native Client talks, demos,
 and publications from various conferences and academic symposiums.
 
 Recent talks and demos
@@ skipping 36 matching lines @@
        <https://www.youtube.com/watch?v=KOsJIhmeXoc>`_ (`slides
        <https://nacl-instruction-io12.appspot.com>`__)
    * - 2012/03/05
      - `GDC 2012 <http://www.gdcvault.com/free/gdc-12>`_
      - `Get Your Port On <https://www.youtube.com/watch?v=R281PhQufHo>`_
        Porting Your C++ Game to Native Client
    * - 2011/08/12
      - ---
      - `Native Client Update and Showcase
        <https://www.youtube.com/watch?v=g3aBfkFbPWk>`_
-   * - 2011/05/11
-     - `Google I/O 2011
-       <https://www.google.com/events/io/2011/index-live.html>`_
-     - `Beyond JavaScript: Programming the Web with Native Client
-       <https://www.google.com/events/io/2011/sessions/beyond-javascript-programming-the-web-with-native-client.html>`_
    * - 2010/11/04
      - `2010 LLVM Developers' Meeting
        <http://llvm.org/devmtg/2010-11/>`_
      - `Portable Native Client
        <http://llvm.org/devmtg/2010-11/videos/Sehr_NativeClient-desktop.mp4>`_
 
 Publications
 ------------
 
 .. list-table::
@@ skipping 76 matching lines @@
 Porting AirMech
 ^^^^^^^^^^^^^^^
 
 `Carbon Games <http://carbongames.com/>`_ chose Native Client as a
 solution for cross-platform delivery of their PC game `AirMech
 <https://chrome.google.com/webstore/detail/hdahlabpinmfcemhcbcfoijcpoalfgdn>`_
 to Linux and Macintosh in lieu of native ports. They describe the
 porting process on their blog.
 
 `Read more <http://carbongames.com/2012/01/Native-Client>`__