Subclass GrVkCommandBuffer into Primary and Secondary CommandBuffers.

src/gpu/vk/GrVkRenderPass.cpp

Index: src/gpu/vk/GrVkRenderPass.cpp
diff --git a/src/gpu/vk/GrVkRenderPass.cpp b/src/gpu/vk/GrVkRenderPass.cpp
index 84c9c521ccfd00bb50baba7c4403ef41cee4d5a4..0fc0d5b0f810e7000a17c36bca8593a013663cac 100644
--- a/src/gpu/vk/GrVkRenderPass.cpp
+++ b/src/gpu/vk/GrVkRenderPass.cpp
@@ -232,11 +232,8 @@ void GrVkRenderPass::getBeginInfo(const GrVkRenderTarget& target,
     *contents = VK_SUBPASS_CONTENTS_INLINE;
 }
 
-bool GrVkRenderPass::isCompatible(const GrVkRenderTarget& target) const {
-    AttachmentsDescriptor desc;
-    AttachmentFlags flags;
-    target.getAttachmentsDescriptor(&desc, &flags);
-
+bool GrVkRenderPass::isCompatible(const AttachmentsDescriptor& desc,
+                                  const AttachmentFlags& flags) const {
     if (flags != fAttachmentFlags) {
         return false;
     }
@@ -260,6 +257,18 @@ bool GrVkRenderPass::isCompatible(const GrVkRenderTarget& target) const {
     return true;
 }
 
+bool GrVkRenderPass::isCompatible(const GrVkRenderTarget& target) const {
+    AttachmentsDescriptor desc;
+    AttachmentFlags flags;
+    target.getAttachmentsDescriptor(&desc, &flags);
+
+    return this->isCompatible(desc, flags);
+}
+
+bool GrVkRenderPass::isCompatible(const GrVkRenderPass& renderPass) const {
+    return this->isCompatible(renderPass.fAttachmentsDescriptor, renderPass.fAttachmentFlags);
+}
+
 bool GrVkRenderPass::equalLoadStoreOps(const LoadStoreOps& colorOps,
                                        const LoadStoreOps& resolveOps,
                                        const LoadStoreOps& stencilOps) const {