Support transition trace capturing in Winscope

Test: npm run build:all && npm run test:all
Bug: 265791162
Change-Id: Ie1d8604bbb362ee1940dc46291446cdbbeeeecda

tools/winscope/src/adb/winscope_proxy.py

@@ -196,6 +196,11 @@ TRACE_TARGETS = {
         WinscopeFileMatcher("/data/local/tmp", "eventlog", "eventlog"),
         'rm -f /data/local/tmp/eventlog.winscope && EVENT_LOG_TRACING_START_TIME=$EPOCHREALTIME\necho "Event Log trace started."',
         'echo "EventLog\\n" > /data/local/tmp/eventlog.winscope && su root logcat -b events -v threadtime -v printable -v uid -v nsec -v epoch -b events -t $EVENT_LOG_TRACING_START_TIME >> /data/local/tmp/eventlog.winscope',
+    ),
+    "transition_trace": TraceTarget(
+        WinscopeFileMatcher(WINSCOPE_DIR, "transition_trace", "transition_trace"),
+        'su root cmd window shell tracing start\necho "WMShell Transition trace started."',
+        'su root cmd window shell tracing stop >/dev/null 2>&1'
     )
 }
 

tools/winscope/src/app/trace_info.ts

@@ -29,6 +29,7 @@ const ACCESSIBILITY_ICON = "accessibility_new";
 const TAG_ICON = "details";
 const TRACE_ERROR_ICON = "warning";
 const EVENT_LOG_ICON = "description";
+const TRANSITION_ICON = "animation";
 
 interface TraceInfoMap {
   [key: number]: {
@@ -123,5 +124,10 @@ export const TRACE_INFO: TraceInfoMap = {
     name: "Event Log",
     icon: EVENT_LOG_ICON,
     color: "#fdd663",
+  },
+  [TraceType.TRANSITION]: {
+    name: "Transition Trace",
+    icon: TRANSITION_ICON,
+    color: "#EC407A",
   }
 };

tools/winscope/src/trace_collection/trace_collection_utils.ts

@@ -208,6 +208,12 @@ export const traceConfigurations: TraceConfigurationMap = {
     run: false,
     config: undefined,
   },
+  transition_trace: {
+    name: "Shell Transitions",
+    isTraceCollection: undefined,
+    run: false,
+    config: undefined,
+  },
 };
 
 export const TRACES: {[key: string]: TraceConfigurationMap} = {
@@ -220,6 +226,7 @@ export const TRACES: {[key: string]: TraceConfigurationMap} = {
     screen_recording: traceConfigurations['screen_recording'],
     ime_tracing: traceConfigurations['ime_tracing'],
     eventlog: traceConfigurations["eventlog"],
+    transition_trace: traceConfigurations["transition_trace"],
   },
   arc: {
     wayland_trace: traceConfigurations['wayland_trace'],