Add log for showSoftInput called from Insets API

Add a debug log to identify calls to showSoftInput from Insets API.

Fix: 1865976
Test: manually using steps:
      1. Use an app like launcher that uses Insets API to show IME.
      2. dump using adb shell dumpsys input_method
      3. Verify log.
      4. use another app that shows IME using showSoftInput like gmail
      5. verify the log

Change-Id: I6ba0d3f7912855f31e033735557b44eeed3e6652
diff --git a/core/java/android/view/inputmethod/InputMethodManager.java b/core/java/android/view/inputmethod/InputMethodManager.java
index 20a0b0b..6694b7e 100644
--- a/core/java/android/view/inputmethod/InputMethodManager.java
+++ b/core/java/android/view/inputmethod/InputMethodManager.java
@@ -2259,7 +2259,8 @@
             if (servedView == null || servedView.getWindowToken() != windowToken) {
                 return false;
             }
-            showSoftInput(servedView, 0 /* flags */, null /* resultReceiver */);
+            showSoftInput(servedView, 0 /* flags */, null /* resultReceiver */,
+                    SoftInputShowHideReason.SHOW_SOFT_INPUT_BY_INSETS_API);
             return true;
         }
     }
diff --git a/core/java/com/android/internal/inputmethod/InputMethodDebug.java b/core/java/com/android/internal/inputmethod/InputMethodDebug.java
index d026ecd..a00b993 100644
--- a/core/java/com/android/internal/inputmethod/InputMethodDebug.java
+++ b/core/java/com/android/internal/inputmethod/InputMethodDebug.java
@@ -234,6 +234,8 @@
                 return "SHOW_TOGGLE_SOFT_INPUT";
             case SoftInputShowHideReason.HIDE_TOGGLE_SOFT_INPUT:
                 return "HIDE_TOGGLE_SOFT_INPUT";
+            case SoftInputShowHideReason.SHOW_SOFT_INPUT_BY_INSETS_API:
+                return "SHOW_SOFT_INPUT_BY_INSETS_API";
             default:
                 return "Unknown=" + reason;
         }
diff --git a/core/java/com/android/internal/inputmethod/SoftInputShowHideReason.java b/core/java/com/android/internal/inputmethod/SoftInputShowHideReason.java
index 755bd5e..e3713a3 100644
--- a/core/java/com/android/internal/inputmethod/SoftInputShowHideReason.java
+++ b/core/java/com/android/internal/inputmethod/SoftInputShowHideReason.java
@@ -52,7 +52,8 @@
         SoftInputShowHideReason.HIDE_REMOVE_CLIENT,
         SoftInputShowHideReason.SHOW_RESTORE_IME_VISIBILITY,
         SoftInputShowHideReason.SHOW_TOGGLE_SOFT_INPUT,
-        SoftInputShowHideReason.HIDE_TOGGLE_SOFT_INPUT})
+        SoftInputShowHideReason.HIDE_TOGGLE_SOFT_INPUT,
+        SoftInputShowHideReason.SHOW_SOFT_INPUT_BY_INSETS_API})
 public @interface SoftInputShowHideReason {
     /** Show soft input by {@link android.view.inputmethod.InputMethodManager#showSoftInput}. */
     int SHOW_SOFT_INPUT = 0;
@@ -188,4 +189,10 @@
      * {@link android.view.inputmethod.InputMethodManager#toggleSoftInput(int, int)};
      */
     int HIDE_TOGGLE_SOFT_INPUT = 24;
+
+    /**
+     * Show soft input by
+     * {@link android.view.InsetsController#show(int)};
+     */
+    int SHOW_SOFT_INPUT_BY_INSETS_API = 25;
 }