Show IME when DPAD_CENTER is pressed

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

 // Copyright 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.app.Activity;
 import android.app.SearchManager;
 import android.content.ContentResolver;
 import android.content.Context;
@@ skipping 1800 matching lines @@
     }
 
     /**
      * @see View#dispatchKeyEvent(KeyEvent)
      */
     public boolean dispatchKeyEvent(KeyEvent event) {
         if (getContentViewClient().shouldOverrideKeyEvent(event)) {
             return mContainerViewInternals.super_dispatchKeyEvent(event);
         }
 
+        if (event.getKeyCode() == KeyEvent.KEYCODE_DPAD_CENTER) {
+            showImeIfNeeded();
+            // Not consume it for now, pass it to IME. IME may interpret it as

[aurimas (slooooooooow), 2014/02/13 00:43:23]

The comment should say:
// Event is not consumed here, because ImeAdapter might interpret it as "Enter"
key.

[jdduke (slow), 2014/02/13 00:57:03]

Could you also briefly state in the comment that IME will be shown only if no
hardware keyboard is present? Somebody in the future might be confused by this
and decide the code isn't necessary.

+            // "Enter" key.
+        }
+
         if (mImeAdapter.dispatchKeyEvent(event)) return true;
 
         return mContainerViewInternals.super_dispatchKeyEvent(event);
     }
 
     /**
      * @see View#onHoverEvent(MotionEvent)
      * Mouse move events are sent on hover enter, hover move and hover exit.
      * They are sent on hover exit because sometimes it acts as both a hover
      * move and hover exit.
@@ skipping 1642 matching lines @@
 
     private native void nativeSendSingleTapUma(long nativeContentViewCoreImpl,
             int type, int count);
 
     private native void nativeSendActionAfterDoubleTapUma(long nativeContentViewCoreImpl,
             int type, boolean hasDelay, int count);
 
     private native void nativeExtractSmartClipData(long nativeContentViewCoreImpl,
             int x, int y, int w, int h);
 }