Added initial implementation of Vulkan Render Passes.

content/common/gpu/gpu_command_buffer_stub.cc

Index: content/common/gpu/gpu_command_buffer_stub.cc
diff --git a/content/common/gpu/gpu_command_buffer_stub.cc b/content/common/gpu/gpu_command_buffer_stub.cc
index 25380102fdbd0b73e97ca16ecbb02522afb80e84..780c0e483eefe09595a349994ce70f15317c2868 100644
--- a/content/common/gpu/gpu_command_buffer_stub.cc
+++ b/content/common/gpu/gpu_command_buffer_stub.cc
@@ -51,6 +51,10 @@
 #include "content/common/gpu/stream_texture_android.h"
 #endif
 
+#if defined(ENABLE_VULKAN)
+#include "gpu/vulkan/vulkan_surface.h"
+#endif
+
 namespace content {
 struct WaitForCommandState {
   WaitForCommandState(int32_t start, int32_t end, IPC::Message* reply)
@@ -491,6 +495,13 @@ void GpuCommandBufferStub::Destroy() {
 
   command_buffer_.reset();
 
+#if defined(ENABLE_VULKAN)
+  if (vk_surface_) {
+    vk_surface_->Destroy();
+    vk_surface_.reset();
+  }
+#endif
+
   // Remove this after crbug.com/248395 is sorted out.
   surface_ = NULL;
 }
@@ -539,6 +550,12 @@ void GpuCommandBufferStub::OnInitialize(
         this,
         handle_,
         surface_format_);
+#if defined(ENABLE_VULKAN)
+    vk_surface_ = gfx::VulkanSurface::CreateViewSurface(handle_.handle);
+    bool vk_result = vk_surface_->Initialize(
+        static_cast<gfx::VulkanSurface::Format>(surface_format_));
+    DCHECK(vk_result);
+#endif
   } else {
     surface_ = manager->GetDefaultOffscreenSurface();
   }