Show caller stack trace

Summary: On Android, the stack trace looks different so we don't need to use the Regex we use on iOS. We can simply display all the lines in the trace.

Reviewed By: pasqualeanatriello

Differential Revision: D17181400

fbshipit-source-id: e471da17b89806a161edc7edcf05ac6faed44bf0

android/plugins/litho/src/main/java/com/facebook/flipper/plugins/sections/ChangesetDebug.java

@@ -40,7 +40,8 @@ public class ChangesetDebug implements ChangesetDebugListener {
         String surfaceId,
         String id,
         FlipperArray tree,
-        FlipperObject changesetData);
+        FlipperObject changesetData,
+        StackTraceElement[] trace);
   }
 
   public static void setListener(ChangesetListener listener) {
@@ -103,7 +104,8 @@ public class ChangesetDebug implements ChangesetDebugListener {
         surfaceId,
         sChangesetIdGenerator.incrementAndGet() + "-" + surfaceId,
         tree.build(),
-        changesetData.build());
+        changesetData.build(),
+        changesetDebugInfo.getStackTrace());
   }
 
   private static boolean isEventAsync(@ApplyNewChangeSet int source) {

android/plugins/litho/src/main/java/com/facebook/flipper/plugins/sections/SectionsFlipperPlugin.java

@@ -62,7 +62,8 @@ public class SectionsFlipperPlugin implements FlipperPlugin, ChangesetListener {
       String surfaceId,
       String id,
       FlipperArray tree,
-      FlipperObject changesetData) {
+      FlipperObject changesetData,
+      StackTraceElement[] trace) {
     if (mConnection == null) {
       return;
     }
@@ -84,7 +85,9 @@ public class SectionsFlipperPlugin implements FlipperPlugin, ChangesetListener {
             .put("reason", reason)
             .put("surface_key", surfaceId)
             .put("tree_generation_timestamp", 10000) // TODO
-            .put("stack_trace", new FlipperArray.Builder().build())
+            .put("payload", new FlipperObject.Builder().build())
+            .put("stack_trace", getStackTrace(trace))
+            .put("skip_stack_trace_format", true)
             .put("payload", eventPayloadBuilder.build())
             .build());
 
@@ -122,4 +125,14 @@ public class SectionsFlipperPlugin implements FlipperPlugin, ChangesetListener {
             .put("changeset", changesetData)
             .build());
   }
+
+  private FlipperArray getStackTrace(StackTraceElement[] trace) {
+    final FlipperArray.Builder builder = new FlipperArray.Builder();
+
+    for (StackTraceElement element : trace) {
+      builder.put(element.toString() + "\n");
+    }
+
+    return builder.build();
+  }
 }