Revert of Refactor context creation parameters into a struct.

gpu/command_buffer/service/gl_context_virtual_unittest.cc

Index: gpu/command_buffer/service/gl_context_virtual_unittest.cc
diff --git a/gpu/command_buffer/service/gl_context_virtual_unittest.cc b/gpu/command_buffer/service/gl_context_virtual_unittest.cc
index fa6912e6e3274576314d2fe55f3c3acee38fe69e..2b179a7b9b88a0a404c234452dc429faaaff48d4 100644
--- a/gpu/command_buffer/service/gl_context_virtual_unittest.cc
+++ b/gpu/command_buffer/service/gl_context_virtual_unittest.cc
@@ -44,7 +44,7 @@
     share_group->SetSharedContext(GetGLSurface(), base_context.get());
     scoped_refptr<GLContextVirtual> context(new GLContextVirtual(
         share_group, base_context.get(), decoder_->AsWeakPtr()));
-    EXPECT_TRUE(context->Initialize(GetGLSurface(), gl::GLContextAttribs()));
+    EXPECT_TRUE(context->Initialize(GetGLSurface(), gl::PreferIntegratedGpu));
     EXPECT_TRUE(context->MakeCurrent(GetGLSurface()));
   }
   {
@@ -53,7 +53,7 @@
     share_group->SetSharedContext(GetGLSurface(), base_context.get());
     scoped_refptr<GLContextVirtual> context(new GLContextVirtual(
         share_group, base_context.get(), decoder_->AsWeakPtr()));
-    EXPECT_TRUE(context->Initialize(GetGLSurface(), gl::GLContextAttribs()));
+    EXPECT_TRUE(context->Initialize(GetGLSurface(), gl::PreferIntegratedGpu));
     EXPECT_TRUE(context->MakeCurrent(GetGLSurface()));
   }
 }