Update min Vulkan version to 1.0.8.0, and fix various bugs

src/gpu/vk/GrVkCommandBuffer.h

 /*
 * 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 GrVkCommandBuffer_DEFINED
 #define GrVkCommandBuffer_DEFINED
 
@@ skipping 64 matching lines @@
             GR_VK_CALL(gpu->vkInterface(), CmdBindIndexBuffer(fCmdBuffer,
                                                               vkBuffer,
                                                               0,
                                                               VK_INDEX_TYPE_UINT16));
             fBoundIndexBufferIsValid = true;
             fBoundIndexBuffer = vkBuffer;
             addResource(ibuffer->resource());
         }
     }
 
+    void bindPipeline(const GrVkGpu* gpu, const GrVkPipeline* pipeline);
+
     void bindDescriptorSets(const GrVkGpu* gpu,
                             GrVkPipelineState*,
                             VkPipelineLayout layout,
                             uint32_t firstSet,
                             uint32_t setCount,
                             const VkDescriptorSet* descriptorSets,
                             uint32_t dynamicOffsetCount,
                             const uint32_t* dynamicOffsets);
 
     void setViewport(const GrVkGpu* gpu,
@@ skipping 52 matching lines @@
                            uint32_t copyRegionCount,
                            const VkBufferImageCopy* copyRegions);
 
     // Commands that only work inside of a render pass
     void clearAttachments(const GrVkGpu* gpu,
                           int numAttachments,
                           const VkClearAttachment* attachments,
                           int numRects,
                           const VkClearRect* clearRects) const;
 
-    void bindPipeline(const GrVkGpu* gpu, const GrVkPipeline* pipeline);
-
-
     void drawIndexed(const GrVkGpu* gpu,
                      uint32_t indexCount,
                      uint32_t instanceCount,
                      uint32_t firstIndex,
                      int32_t vertexOffset,
                      uint32_t firstInstance) const;
 
     void draw(const GrVkGpu* gpu,
               uint32_t vertexCount,
               uint32_t instanceCount,
@@ skipping 45 matching lines @@
     const GrVkRenderPass*     fActiveRenderPass;
 
     // Cached values used for dynamic state updates
     VkViewport fCachedViewport;
     VkRect2D   fCachedScissor;
     float      fCachedBlendConstant[4];
 };
 
 
 #endif