aw: Expose setDrawGLFunctionDetachedCallback to AwContents

android_webview/glue/java/src/com/android/webview/chromium/WebViewChromium.java

Index: android_webview/glue/java/src/com/android/webview/chromium/WebViewChromium.java
diff --git a/android_webview/glue/java/src/com/android/webview/chromium/WebViewChromium.java b/android_webview/glue/java/src/com/android/webview/chromium/WebViewChromium.java
index 380792205e76fd475cf37c01d9cbfe4903d5a2c8..8f25c5d1535f61357278b57559e27445476b518e 100644
--- a/android_webview/glue/java/src/com/android/webview/chromium/WebViewChromium.java
+++ b/android_webview/glue/java/src/com/android/webview/chromium/WebViewChromium.java
@@ -1889,9 +1889,6 @@ class WebViewChromium implements WebViewProvider, WebViewProvider.ScrollDelegate
             return;
         }
 
-        if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.M && !"N".equals(Build.VERSION.CODENAME)) {
-            mAwContents.onDrawGLFunctorDetached();
-        }
         mAwContents.onDetachedFromWindow();
     }
 
@@ -2248,6 +2245,11 @@ class WebViewChromium implements WebViewProvider, WebViewProvider.ScrollDelegate
     // AwContents.NativeGLDelegate implementation --------------------------------------
     private class WebViewNativeGLDelegate implements AwContents.NativeGLDelegate {
         @Override
+        public boolean setDrawGLFunctionDetachedCallback(View view, Runnable callback) {
+            return false; // Not supported yet.
+        }
+
+        @Override
         public boolean requestDrawGL(Canvas canvas, boolean waitForCompletion, View containerView) {
             if (mGLfunctor == null) {
                 mGLfunctor = new DrawGLFunctor(