[Win] Enable multiple processes again.

This seems to work well with the Chromium 37-based snapshot.

Change-Id: If7640bf7f2428db12eb2bd01707ef82df9014cf2
Reviewed-by: Jocelyn Turcotte <jocelyn.turcotte@digia.com>

src/core/web_engine_context.cpp

@@ -138,8 +138,6 @@ WebEngineContext::WebEngineContext()
     parsedCommandLine->AppendSwitch(switches::kInProcessGPU);
 
 #if defined(OS_WIN)
-    // FIXME: The renderer process should be fixed on windows.
-    parsedCommandLine->AppendSwitch(switches::kSingleProcess);
     parsedCommandLine->AppendSwitch(switches::kDisableD3D11);
     parsedCommandLine->AppendSwitch(switches::kDisableExperimentalWebGL);
 #endif