Remove unnecessary loop and quit in CronetChunkedOutputStream

components/cronet/android/java/src/org/chromium/net/urlconnection/CronetChunkedOutputStream.java

Index: components/cronet/android/java/src/org/chromium/net/urlconnection/CronetChunkedOutputStream.java
diff --git a/components/cronet/android/java/src/org/chromium/net/urlconnection/CronetChunkedOutputStream.java b/components/cronet/android/java/src/org/chromium/net/urlconnection/CronetChunkedOutputStream.java
index dd0d53c041fbc2bda2e31cfa9665df2c3f9673c7..1f2c1711f7f01a81735455e18e8fd694bf5c46b6 100644
--- a/components/cronet/android/java/src/org/chromium/net/urlconnection/CronetChunkedOutputStream.java
+++ b/components/cronet/android/java/src/org/chromium/net/urlconnection/CronetChunkedOutputStream.java
@@ -82,11 +82,8 @@ final class CronetChunkedOutputStream extends CronetOutputStream {
 
     @Override
     public void close() throws IOException {
-        if (!mLastChunk) {
-            // Write last chunk.
-            mLastChunk = true;
-            mMessageLoop.loop();
-        }
+        // Last chunk is written.
+        mLastChunk = true;
         mClosed = true;
     }
 
@@ -137,9 +134,11 @@ final class CronetChunkedOutputStream extends CronetOutputStream {
                 byteBuffer.put(mBuffer);
                 // Reuse this buffer.
                 mBuffer.clear();
-                // Quit message loop so embedder can write more data.
-                mMessageLoop.quit();
                 uploadDataSink.onReadSucceeded(mLastChunk);
+                if (!mLastChunk) {
+                    // Quit message loop so embedder can write more data.
+                    mMessageLoop.quit();
+                }
             }
         }