Set GpuPreferences correctly in GpuDataManagerImplPrivate::AppendGpuCommandLine.

content/browser/gpu/gpu_process_host.h

Index: content/browser/gpu/gpu_process_host.h
diff --git a/content/browser/gpu/gpu_process_host.h b/content/browser/gpu/gpu_process_host.h
index 1d8053bd180c566409fc45980411edae23e77d64..0b35c56b70e8d0ea88dfebd39488f0f2c527e27c 100644
--- a/content/browser/gpu/gpu_process_host.h
+++ b/content/browser/gpu/gpu_process_host.h
@@ -211,7 +211,8 @@ class GpuProcessHost : public BrowserChildProcessHostDelegate,
                      const std::string& key,
                      const std::string& shader);
 
-  bool LaunchGpuProcess(const std::string& channel_id);
+  bool LaunchGpuProcess(const std::string& channel_id,
+                        gpu::GpuPreferences* gpu_preferences);
 
   void SendOutstandingReplies();