Add vulkan files into skia repo.

src/gpu/vk/GrVkProgramDesc.h

 /*
- * Copyright 2013 Google Inc.
+ * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
-#ifndef GrGLProgramDesc_DEFINED
-#define GrGLProgramDesc_DEFINED
+#ifndef GrVkProgramDesc_DEFINED
+#define GrVkProgramDesc_DEFINED
 
 #include "GrColor.h"
 #include "GrProgramDesc.h"
 #include "GrGpu.h"
 #include "GrTypesPriv.h"
 
-class GrGLGpu;
-class GrGLProgramDescBuilder;
+#include "shaderc/shaderc.h"
+#include "vulkan/vulkan.h"
 
-class GrGLProgramDesc : public GrProgramDesc {
-    friend class GrGLProgramDescBuilder;
+class GrVkGpu;
+class GrVkProgramDescBuilder;
+
+class GrVkProgramDesc : public GrProgramDesc {
+private:
+    friend class GrVkProgramDescBuilder;
 };
 
 /**
  * This class can be used to build a GrProgramDesc.  It also provides helpers for accessing
  * GL specific info in the header.
  */
-class GrGLProgramDescBuilder {
+class GrVkProgramDescBuilder {
 public:
     typedef GrProgramDesc::KeyHeader KeyHeader;
     // The key, stored in fKey, is composed of five parts(first 2 are defined in the key itself):
     // 1. uint32_t for total key length.
     // 2. uint32_t for a checksum.
     // 3. Header struct defined above.
     // 4. Backend-specific information including per-processor keys and their key lengths.
     //    Each processor's key is a variable length array of uint32_t.
     enum {
         // Part 3.
-        kHeaderOffset = GrGLProgramDesc::kHeaderOffset,
+        kHeaderOffset = GrVkProgramDesc::kHeaderOffset,
         kHeaderSize = SkAlign4(sizeof(KeyHeader)),
         // Part 4.
         // This is the offset into the backenend specific part of the key, which includes
         // per-processor keys.
         kProcessorKeysOffset = kHeaderOffset + kHeaderSize,
     };
 
     /**
      * Builds a GL specific program descriptor
      *
      * @param GrPrimitiveProcessor The geometry
      * @param GrPipeline  The optimized drawstate.  The descriptor will represent a program
      *                        which this optstate can use to draw with.  The optstate contains
      *                        general draw information, as well as the specific color, geometry,
      *                        and coverage stages which will be used to generate the GL Program for
      *                        this optstate.
-     * @param GrGLSLCaps     Capabilities of the GLSL backend.
+     * @param GrVkGpu  A GL Gpu, the caps and Gpu object are used to output processor specific
+     *                 parts of the descriptor.
      * @param GrProgramDesc  The built and finalized descriptor
      **/
     static bool Build(GrProgramDesc*,
                       const GrPrimitiveProcessor&,
                       const GrPipeline&,
                       const GrGLSLCaps&);
 };
 
 #endif