skia: add ability to load command_buffer_gles2

tests/GLProgramsTest.cpp

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 // This is a GPU-backend specific test. It relies on static intializers to work
 
@@ skipping 277 matching lines @@
                 maxStages = 1;
             } else {
                 return;
             }
 #if SK_ANGLE
             // Some long shaders run out of temporary registers in the D3D compiler on ANGLE.
             if (type == GrContextFactory::kANGLE_GLContextType) {
                 maxStages = 2;
             }
 #endif
+#if SK_COMMAND_BUFFER
+            // Some long shaders run out of temporary registers in the D3D compiler on ANGLE.
+            // TODO(hendrikw): This only needs to happen with the ANGLE comand buffer backend.
+            if (type == GrContextFactory::kCommandBuffer_GLContextType) {
+                maxStages = 2;
+            }
+#endif
             GrTestTarget target;
             context->getTestTarget(&target);
             REPORTER_ASSERT(reporter, target.target()->programUnitTest(context, maxStages));
         }
     }
 }
 
 #endif