Add proto-based InputMethodService and server side dumping for IME

This CL implements a mechanism to dump InputMethodService and IME
related server states into a proto file which can later be imported
to Winscope to allow easy debugging.

The Design Doc for the IME tracing project is: go/ime-tracing

Bug: 154348613
Test: start trace by calling "adb shell ime tracing start"
      end trace by calling "adb shell ime tracing stop"
      pull trace using "adb pull /data/misc/wmtrace/ime_trace.pb ime_trace.pb"
Change-Id: Icbfb8c11e882f29eb45dea9d4c23315c48e9d619

1 files changed, 7 insertions, 1 deletions

diff --git a/core/java/android/view/InsetsSource.java b/core/java/android/view/InsetsSource.java
index 41cc8459a266..ec54007e9979 100644
--- a/core/java/android/view/InsetsSource.java
+++ b/core/java/android/view/InsetsSource.java
@@ -188,7 +188,13 @@ public class InsetsSource implements Parcelable {
         return false;
     }
 
-    void dumpDebug(ProtoOutputStream proto, long fieldId) {
+    /**
+     * Export the state of {@link InsetsSource} into a protocol buffer output stream.
+     *
+     * @param proto   Stream to write the state to
+     * @param fieldId FieldId of InsetsSource as defined in the parent message
+     */
+    public void dumpDebug(ProtoOutputStream proto, long fieldId) {
         final long token = proto.start(fieldId);
         proto.write(TYPE, InsetsState.typeToString(mType));
         mFrame.dumpDebug(proto, FRAME);