content: Use type-parameterized tests for GpuMemoryBuffer implementations.

content/gpu/gpu_main.cc

Index: content/gpu/gpu_main.cc
diff --git a/content/gpu/gpu_main.cc b/content/gpu/gpu_main.cc
index e7ce06e5a26c77121d07c5db178ceba7c8a250c7..dbc7cb78f888e80135bace85a81a5a7507b6e97a 100644
--- a/content/gpu/gpu_main.cc
+++ b/content/gpu/gpu_main.cc
@@ -361,9 +361,13 @@ int GpuMain(const MainFunctionParams& parameters) {
 
   logging::SetLogMessageHandler(NULL);
 
-  scoped_ptr<GpuMemoryBufferFactory> gpu_memory_buffer_factory =
-      GpuMemoryBufferFactory::Create(
-          GpuChildThread::GetGpuMemoryBufferFactoryType());
+  gfx::GpuMemoryBufferType native_gpu_memory_buffer_factory_type =
+      GpuMemoryBufferFactory::GetNativeType();
+  scoped_ptr<GpuMemoryBufferFactory> gpu_memory_buffer_factory;
+  if (native_gpu_memory_buffer_factory_type != gfx::EMPTY_BUFFER) {
+    gpu_memory_buffer_factory =
+        GpuMemoryBufferFactory::Create(native_gpu_memory_buffer_factory_type);
+  }
   gpu::SyncPointManager sync_point_manager(false);
 
   GpuProcess gpu_process;