Vulkan: Plumb the debug context down to SpirvShader

SpirvShader doesn't actually do anything with this (yet).
Extracts the dull plumbing from the meat of the SpirvShader debugger implementation.

Bug: b/145351270
Change-Id: I1a648d8e463c428a232f711d0cc5dd0ecf94ad1e
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/38914
Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Tested-by: Ben Clayton <bclayton@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>

src/Pipeline/SpirvShader.hpp

diff --git a/src/Pipeline/SpirvShader.hpp b/src/Pipeline/SpirvShader.hpp
index f32cc63..b7c3eeb 100644
--- a/src/Pipeline/SpirvShader.hpp
+++ b/src/Pipeline/SpirvShader.hpp
@@ -50,6 +50,10 @@
 class RenderPass;
 struct SampledImageDescriptor;
 
+namespace dbg {
+class Context;
+}  // namespace dbg
+
 }  // namespace vk
 
 namespace sw {
@@ -473,7 +477,8 @@
 	            InsnStore const &insns,
 	            const vk::RenderPass *renderPass,
 	            uint32_t subpassIndex,
-	            bool robustBufferAccess);
+	            bool robustBufferAccess,
+	            const std::shared_ptr<vk::dbg::Context> &dbgctx);
 
 	struct Modes
 	{