[magma] Introduce magma.gni in new location.

Just imports the old location for now.  We'll switch out of tree
clients to import from the new location before completing the
magma source migration.

Change-Id: I27feab541eb98c9746959bd615db90ebeac4580b
diff --git a/garnet/lib/magma/gnbuild/magma.gni b/garnet/lib/magma/gnbuild/magma.gni
index 2c2d808..67f4b68 100644
--- a/garnet/lib/magma/gnbuild/magma.gni
+++ b/garnet/lib/magma/gnbuild/magma.gni
@@ -11,7 +11,8 @@
 declare_args() {
   magma_build_root = "//garnet/lib/magma"
   expat_build_root = "//third_party/expat"
-  msd_intel_gen_build_root = "//garnet/drivers/gpu/msd-intel-gen"
+  msd_build_root = "//garnet/drivers/gpu"
+  msd_intel_gen_build_root = "$msd_build_root/msd-intel-gen"
   glm_build_root = "//third_party/glm"
   zircon_build_root = "//zircon"
 
diff --git a/src/graphics/examples/vkcube/BUILD.gn b/src/graphics/examples/vkcube/BUILD.gn
index 93eaa34..d356827 100644
--- a/src/graphics/examples/vkcube/BUILD.gn
+++ b/src/graphics/examples/vkcube/BUILD.gn
@@ -3,7 +3,7 @@
 # found in the LICENSE file.
 
 import("//build/package.gni")
-import("//garnet/lib/magma/gnbuild/magma.gni")
+import("//src/graphics/lib/magma/gnbuild/magma.gni")
 import("//src/lib/vulkan/image_pipe_swapchain.gni")
 import("//src/lib/vulkan/layers.gni")
 
diff --git a/src/graphics/lib/magma/gnbuild/magma.gni b/src/graphics/lib/magma/gnbuild/magma.gni
new file mode 100644
index 0000000..0d8295e8
--- /dev/null
+++ b/src/graphics/lib/magma/gnbuild/magma.gni
@@ -0,0 +1,5 @@
+# Copyright 2020 The Fuchsia Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import("//garnet/lib/magma/gnbuild/magma.gni")
diff --git a/src/graphics/tests/BUILD.gn b/src/graphics/tests/BUILD.gn
index fee1310..af98438 100644
--- a/src/graphics/tests/BUILD.gn
+++ b/src/graphics/tests/BUILD.gn
@@ -3,7 +3,7 @@
 # found in the LICENSE file.
 
 import("//build/test/test_package.gni")
-import("//garnet/lib/magma/gnbuild/magma.gni")
+import("//src/graphics/lib/magma/gnbuild/magma.gni")
 import("//src/lib/vulkan/layers.gni")
 
 group("tests") {
diff --git a/src/graphics/tests/benchmark/BUILD.gn b/src/graphics/tests/benchmark/BUILD.gn
index 1b55d9e..9925c12 100644
--- a/src/graphics/tests/benchmark/BUILD.gn
+++ b/src/graphics/tests/benchmark/BUILD.gn
@@ -3,7 +3,7 @@
 # found in the LICENSE file.
 
 import("//build/test/test_package.gni")
-import("//garnet/lib/magma/gnbuild/magma.gni")
+import("//src/graphics/lib/magma/gnbuild/magma.gni")
 
 group("benchmark") {
   testonly = true
diff --git a/src/graphics/tests/vk_timer_query/BUILD.gn b/src/graphics/tests/vk_timer_query/BUILD.gn
index 5e06d5f..f208e34 100644
--- a/src/graphics/tests/vk_timer_query/BUILD.gn
+++ b/src/graphics/tests/vk_timer_query/BUILD.gn
@@ -2,7 +2,7 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-import("//garnet/lib/magma/gnbuild/magma.gni")
+import("//src/graphics/lib/magma/gnbuild/magma.gni")
 
 executable("vk_timer_query") {
   testonly = true
diff --git a/src/graphics/tests/vkvalidation/BUILD.gn b/src/graphics/tests/vkvalidation/BUILD.gn
index 2ef7105..e92cd3a 100644
--- a/src/graphics/tests/vkvalidation/BUILD.gn
+++ b/src/graphics/tests/vkvalidation/BUILD.gn
@@ -3,7 +3,7 @@
 # found in the LICENSE file.
 
 import("//build/test/test_package.gni")
-import("//garnet/lib/magma/gnbuild/magma.gni")
+import("//src/graphics/lib/magma/gnbuild/magma.gni")
 import("//src/lib/vulkan/image_pipe_swapchain.gni")
 import("//src/lib/vulkan/layers.gni")
 
diff --git a/src/lib/vulkan/tests/BUILD.gn b/src/lib/vulkan/tests/BUILD.gn
index ec262d98..529875c 100644
--- a/src/lib/vulkan/tests/BUILD.gn
+++ b/src/lib/vulkan/tests/BUILD.gn
@@ -3,7 +3,7 @@
 # found in the LICENSE file.
 
 import("//build/test/test_package.gni")
-import("//garnet/lib/magma/gnbuild/magma.gni")
+import("//src/graphics/lib/magma/gnbuild/magma.gni")
 import("//src/lib/vulkan/image_pipe_swapchain.gni")
 import("//src/lib/vulkan/layers.gni")
 
diff --git a/src/lib/vulkan/third_party/layers/BUILD.gn b/src/lib/vulkan/third_party/layers/BUILD.gn
index 91f6345..fafb28f 100644
--- a/src/lib/vulkan/third_party/layers/BUILD.gn
+++ b/src/lib/vulkan/third_party/layers/BUILD.gn
@@ -20,7 +20,7 @@
 # IN THE SOFTWARE.
 
 import("//build/package.gni")
-import("//garnet/lib/magma/gnbuild/magma.gni")
+import("//src/graphics/lib/magma/gnbuild/magma.gni")
 
 package("screenshot_layer") {
   deprecated_system_image = true
diff --git a/src/ui/lib/escher/BUILD.gn b/src/ui/lib/escher/BUILD.gn
index be874e9..0184de5 100644
--- a/src/ui/lib/escher/BUILD.gn
+++ b/src/ui/lib/escher/BUILD.gn
@@ -5,7 +5,7 @@
 import("//build/package.gni")
 import("//build/test/test_package.gni")
 import("//build/testing/environments.gni")
-import("//garnet/lib/magma/gnbuild/magma.gni")
+import("//src/graphics/lib/magma/gnbuild/magma.gni")
 import("//src/lib/vulkan/layers.gni")
 
 import("//src/ui/lib/escher/build_args.gni")
diff --git a/src/ui/scenic/BUILD.gn b/src/ui/scenic/BUILD.gn
index 63d16f4..7d8edd3 100644
--- a/src/ui/scenic/BUILD.gn
+++ b/src/ui/scenic/BUILD.gn
@@ -5,7 +5,7 @@
 import("//build/package.gni")
 import("//build/test/test_package.gni")
 import("//build/testing/environments.gni")
-import("//garnet/lib/magma/gnbuild/magma.gni")
+import("//src/graphics/lib/magma/gnbuild/magma.gni")
 import("//src/lib/vulkan/layers.gni")
 import("//src/ui/lib/escher/build_args.gni")
 import("//src/ui/lib/escher/shaders/shaders.gni")