Remove focus on back key press if focus is on url bar.

content/shell/android/java/src/org/chromium/content_shell/Shell.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_shell;
 
 import android.content.Context;
 import android.graphics.drawable.ClipDrawable;
 import android.text.TextUtils;
 import android.util.AttributeSet;
@@ skipping 148 matching lines @@
             @Override
             public void onFocusChange(View v, boolean hasFocus) {
                 setKeyboardVisibilityForUrl(hasFocus);
                 mNextButton.setVisibility(hasFocus ? GONE : VISIBLE);
                 mPrevButton.setVisibility(hasFocus ? GONE : VISIBLE);
                 if (!hasFocus) {
                     mUrlTextView.setText(mContentViewCore.getUrl());
                 }
             }
         });
+        mUrlTextView.setOnKeyListener(new OnKeyListener() {
+            @Override
+            public boolean onKey(View v, int keyCode, KeyEvent event) {
+                if (keyCode == KeyEvent.KEYCODE_BACK) {
+                    mUrlTextView.clearFocus();
+                    mContentViewCore.getContainerView().requestFocus();

[Ted C, 2014/09/08 15:47:55]

Is the above line necessary with this line?  By requesting focus on a different
view, it should internally clear focus here.

[ankit, 2014/09/09 10:28:35]

Done.
Above line not required.

+                    return true;
+                }
+                return false;
+            }
+        });
     }
 
     /**
      * Loads an URL.  This will perform minimal amounts of sanitizing of the URL to attempt to
      * make it valid.
      *
      * @param url The URL to be loaded by the shell.
      */
     public void loadUrl(String url) {
         if (url == null) return;
@@ skipping 139 matching lines @@
                 Context.INPUT_METHOD_SERVICE);
         if (visible) {
             imm.showSoftInput(mUrlTextView, InputMethodManager.SHOW_IMPLICIT);
         } else {
             imm.hideSoftInputFromWindow(mUrlTextView.getWindowToken(), 0);
         }
     }
 
     private static native void nativeCloseShell(long shellPtr);
 }