skia: add ability to load command_buffer_gles2

src/gpu/GrContextFactory.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrContextFactory_DEFINED
 #define GrContextFactory_DEFINED
 
@@ skipping 16 matching lines @@
      * Types of GL contexts supported. For historical and testing reasons the native GrContext will
      * not use "GL_NV_path_rendering" even when the driver supports it. There is a separate context
      * type that does not remove NVPR support and which will fail when the driver does not support
      * the extension.
      */
     enum GLContextType {
       kNative_GLContextType,
 #if SK_ANGLE
       kANGLE_GLContextType,
 #endif
+#if SK_COMMAND_BUFFER
+      kCommandBuffer_GLContextType,
+#endif
 #if SK_MESA
       kMESA_GLContextType,
 #endif
       /** Similar to kNative but does not filter NVPR. It will fail if the GL driver does not
           support NVPR */
       kNVPR_GLContextType,
       kNull_GLContextType,
       kDebug_GLContextType,
 
       kLastGLContextType = kDebug_GLContextType
@@ skipping 14 matching lines @@
     static const char* GLContextTypeName(GLContextType type) {
         switch (type) {
             case kNative_GLContextType:
                 return "native";
             case kNull_GLContextType:
                 return "null";
 #if SK_ANGLE
             case kANGLE_GLContextType:
                 return "angle";
 #endif
+#if SK_COMMAND_BUFFER
+            case kCommandBuffer_GLContextType:
+                return "commandbuffer";
+#endif
 #if SK_MESA
             case kMESA_GLContextType:
                 return "mesa";
 #endif
             case kNVPR_GLContextType:
                 return "nvpr";
             case kDebug_GLContextType:
                 return "debug";
             default:
                 SkFAIL("Unknown GL Context type.");
@@ skipping 52 matching lines @@
     struct GPUContext {
         GLContextType             fType;
         SkGLContext*              fGLContext;
         GrContext*                fGrContext;
     };
     SkTArray<GPUContext, true>    fContexts;
     const GrContextOptions        fGlobalOptions;
 };
 
 #endif