Fix the incorrect native ImeAdapter attach and detach.

content/public/android/java/src/org/chromium/content/browser/ImeAdapter.java

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.content.browser;
 
 import android.content.Context;
 import android.os.Handler;
 import android.os.ResultReceiver;
 import android.text.Editable;
@@ skipping 244 matching lines @@
     private void hideKeyboard(boolean unzoomIfNeeded) {
         mIsShowWithoutHideOutstanding  = false;
         View view = mViewEmbedder.getAttachedView();
         if (mInputMethodManagerWrapper.isActive(view)) {
             mInputMethodManagerWrapper.hideSoftInputFromWindow(view.getWindowToken(), 0,
                     unzoomIfNeeded ? mViewEmbedder.getNewShowKeyboardReceiver() : null);
         }
     }
 
     @CalledByNative
-    void detach() {
-        mNativeImeAdapterAndroid = 0;
-        mTextInputType = 0;
+    void detach(int nativeImeAdapter) {
+        if (mNativeImeAdapterAndroid == nativeImeAdapter) {

[aurimas (slooooooooow), 2013/04/11 05:51:56]

Can you add a comment above here explaining why this check here, so it would be
easier for the next person reading to understand.

[Shouqun Liu, 2013/04/11 06:07:48]

Done, a comment added. thanks for reviewing this

On 2013/04/11 05:51:56, aurimas wrote:

+            mNativeImeAdapterAndroid = 0;
+            mTextInputType = 0;
+        }
     }
 
     boolean hasInputType() {
         return mTextInputType != sTextInputTypeNone;
     }
 
     static boolean isTextInputType(int type) {
         return type != sTextInputTypeNone && !InputDialogContainer.isDialogInputType(type);
     }
 
@@ skipping 571 matching lines @@
             int before, int after);
 
     private native void nativeImeBatchStateChanged(int nativeImeAdapterAndroid, boolean isBegin);
 
     private native void nativeUnselect(int nativeImeAdapterAndroid);
     private native void nativeSelectAll(int nativeImeAdapterAndroid);
     private native void nativeCut(int nativeImeAdapterAndroid);
     private native void nativeCopy(int nativeImeAdapterAndroid);
     private native void nativePaste(int nativeImeAdapterAndroid);
 }