Revert r21117 as it caused reliability failures....

chrome/renderer/render_process.h

Index: chrome/renderer/render_process.h
===================================================================
--- chrome/renderer/render_process.h	(revision 21215)
+++ chrome/renderer/render_process.h	(working copy)
@@ -21,7 +21,11 @@
 // each renderer.
 class RenderProcess : public ChildProcess {
  public:
+  // This constructor grabs the channel name from the command line arguments.
   RenderProcess();
+  // This constructor uses the given channel name.
+  RenderProcess(const std::string& channel_name);
+
   ~RenderProcess();
 
   // Get a canvas suitable for drawing and transporting to the browser
@@ -48,10 +52,14 @@
     return static_cast<RenderProcess*>(ChildProcess::current());
   }
 
+ protected:
+  friend class RenderThread;
   // Just like in_process_plugins(), but called before RenderProcess is created.
   static bool InProcessPlugins();
 
  private:
+  void Init();
+
   // Look in the shared memory cache for a suitable object to reuse.
   //   result: (output) the memory found
   //   size: the resulting memory will be >= this size, in bytes