Revert 24846 - Enable extensions by default....

chrome/browser/renderer_host/browser_render_process_host.cc

Index: chrome/browser/renderer_host/browser_render_process_host.cc
===================================================================
--- chrome/browser/renderer_host/browser_render_process_host.cc	(revision 25203)
+++ chrome/browser/renderer_host/browser_render_process_host.cc	(working copy)
@@ -349,6 +349,25 @@
     }
   }
 
+  // Tell the renderer to enable extensions if there are any extensions loaded.
+  //
+  // NOTE: This is subtly different than just passing along whether
+  // --enable-extenisons is present in the browser process. For example, there
+  // is also an extensions.enabled preference, and there may be various special
+  // cases about whether to allow extensions to load.
+  //
+  // This introduces a race condition where the first renderer never gets
+  // extensions enabled, so we also set the flag if extensions_enabled(). This
+  // isn't perfect though, because of the special cases above.
+  //
+  // TODO(aa): We need to get rid of the need to pass this flag at all. It is
+  // only used in one place in the renderer.
+  if (profile()->GetExtensionsService()) {
+    if (profile()->GetExtensionsService()->extensions()->size() > 0 ||
+        profile()->GetExtensionsService()->extensions_enabled())
+      cmd_line.AppendSwitch(switches::kEnableExtensions);
+  }
+
   // Pass on the browser locale.
   const std::string locale = g_browser_process->GetApplicationLocale();
   cmd_line.AppendSwitchWithValue(switches::kLang, ASCIIToWide(locale));