Adding MimeHandlerView.

chrome/test/data/extensions/platform_apps/web_view/focus/inject_input_method.js

 // Copyright 2014 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.
 
 var embedder = null;
 var inputElement1;
 var inputElement2;
 var waitingForBlur = false;
 
 var LOG = function(msg) {
   window.console.log(msg);
 };
 
 var sendMessage = function(data) {
   embedder.postMessage(JSON.stringify(data), '*');
 };
 
-var waitingForInput = false;
-
-var onInputFired = function() {
-  sendMessage(['response-waitForOnInput', onInputState.value]);
-  onInputState.fired = false;
-  if (inputElement1.value == 'InputTest456') {
-    // Prepare for next step, step 3.
-    inputElement1.value = '';
-  }
-  waitingForInput = false;
-};
-
 var onInputState = {fired: false, value: ''};
 // Waits for oninput event to fire on |inputElement1|.
 // Upon receiving the event, we ping back the embedder with the value of
 // the textbox.
 var waitForOnInput = function() {
   var inputElement1 = document.querySelector('input');
   LOG('inputElement1: ' + inputElement1);
   if (onInputState.fired) {
-    onInputFired();
-  } else {
-    waitingForInput = true;
+    sendMessage(['response-waitForOnInput', onInputState.value]);
+
+    onInputState.fired = false;
+    if (inputElement1.value == 'InputTest456') {
+      // Prepare for next step, step 3.
+      inputElement1.value = '';
+    }
   }
 };
 
 // Waits for the first textbox element to be focused.
 var waitForFocus = function() {
   inputElement1 = document.createElement('input');
   inputElement1.id = 'input1';
   inputElement1.oninput = function() {
     LOG('inputElement1.oninput: ' + inputElement1.value);
     onInputState.fired = true;
     onInputState.value = inputElement1.value;
-    if (waitingForInput) {
-      onInputFired();
-    }
   };
   var inputElement1FocusListener = function() {
     LOG('inputElement1.focus');
     inputElement1.removeEventListener('focus', inputElement1FocusListener);
     sendMessage(['response-seenFocus']);
   };
   inputElement1.addEventListener('focus', inputElement1FocusListener);
   document.body.appendChild(inputElement1);
 
   inputElement2 = document.createElement('input');
@@ skipping 38 matching lines @@
     };
     inputElement2.addEventListener('focus', onInputElement2Focused);
 
     inputElement2.focus();
   } else if (data[0] == 'request-valueAfterExtendSelection') {
     sendMessage(['response-valueAfterExtendSelection', inputElement1.value]);
   } else if (data[0] == 'request-focus-again') {
     waitForFocusAgain();
   }
 });