Add offload dir to RunTestRequest

BUG:1022986
Change-Id: I8f71302589b0c837dfa845776b35cde455b289a4
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/infra/proto/+/2125031
Commit-Queue: Jacob Kopczynski <jkop@chromium.org>
Tested-by: Jacob Kopczynski <jkop@chromium.org>
Auto-Submit: Jacob Kopczynski <jkop@chromium.org>
Reviewed-by: Alex Zamorzaev <zamorzaev@chromium.org>
Reviewed-by: Jacob Kopczynski <jkop@chromium.org>
diff --git a/go/test_platform/phosphorus/runtest.pb.go b/go/test_platform/phosphorus/runtest.pb.go
index 2b03836..4d9fcb0 100644
--- a/go/test_platform/phosphorus/runtest.pb.go
+++ b/go/test_platform/phosphorus/runtest.pb.go
@@ -248,9 +248,10 @@
 
 // remote test drive-agnostic environment variables and similar parameters
 type RunTestRequest_Environment struct {
-	// A directory whose contents will be offloaded as an Isolated output
-	// This is impractical for the intended use case and so is stillborn.
-	IsolatedOutputDir    string   `protobuf:"bytes,1,opt,name=isolated_output_dir,json=isolatedOutputDir,proto3" json:"isolated_output_dir,omitempty"` // Deprecated: Do not use.
+	// Directory in Google Storage (bucket or subdirectory) in which
+	// synchronous log-data will be offloaded. Reused across tasks.
+	// ex. "gs://chromeos-autotest-results/sync-offloads-testing"
+	GsRootDir            string   `protobuf:"bytes,2,opt,name=gs_root_dir,json=gsRootDir,proto3" json:"gs_root_dir,omitempty"`
 	XXX_NoUnkeyedLiteral struct{} `json:"-"`
 	XXX_unrecognized     []byte   `json:"-"`
 	XXX_sizecache        int32    `json:"-"`
@@ -281,10 +282,9 @@
 
 var xxx_messageInfo_RunTestRequest_Environment proto.InternalMessageInfo
 
-// Deprecated: Do not use.
-func (m *RunTestRequest_Environment) GetIsolatedOutputDir() string {
+func (m *RunTestRequest_Environment) GetGsRootDir() string {
 	if m != nil {
-		return m.IsolatedOutputDir
+		return m.GsRootDir
 	}
 	return ""
 }
@@ -356,43 +356,43 @@
 }
 
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 }
diff --git a/src/test_platform/phosphorus/runtest.proto b/src/test_platform/phosphorus/runtest.proto
index 2fd1fa6..a7c2900 100644
--- a/src/test_platform/phosphorus/runtest.proto
+++ b/src/test_platform/phosphorus/runtest.proto
@@ -44,9 +44,12 @@
 
   // remote test drive-agnostic environment variables and similar parameters
   message Environment {
-    // A directory whose contents will be offloaded as an Isolated output
-    // This is impractical for the intended use case and so is stillborn.
-    string isolated_output_dir = 1 [deprecated=true];
+    reserved 1; // formerly isolated output dir
+
+    // Directory in Google Storage (bucket or subdirectory) in which
+    // synchronous log-data will be offloaded. Reused across tasks.
+    // ex. "gs://chromeos-autotest-results/sync-offloads-testing"
+    string gs_root_dir = 2;
   }
 
   Environment environment = 4;
@@ -85,4 +88,4 @@
   // Absolute path to the test results directory created by `runtest`.
   // Must be inside config.task.results_dir (the overall results directory).
   string results_dir = 2;
-}
\ No newline at end of file
+}