MD History: Select items when tapping anywhere inside the item

chrome/browser/resources/md_history/history_item.html

 <link rel="import" href="chrome://resources/cr_elements/icons.html">
 <link rel="import" href="chrome://resources/html/cr/ui/focus_row.html">
 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-icon/iron-icon.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-styles/shadow.html">
 <link rel="import" href="chrome://resources/html/icon.html">
 <link rel="import" href="chrome://resources/html/util.html">
 <link rel="import" href="chrome://history/browser_service.html">
 <link rel="import" href="chrome://history/constants.html">
 <link rel="import" href="chrome://history/searched_label.html">
@@ skipping 194 matching lines @@
       }
     </style>
 
     <div id="main-container">
       <div id="background-clip">
         <div id="background"></div>
       </div>
       <div id="date-accessed" class="card-title">
         [[cardTitle_(numberOfItems, item.dateRelativeDay, searchTerm)]]
       </div>
-      <div id="item-container">
+      <div id="item-container"
+          on-mousedown="onItemMousedown_"
+          on-click="onItemClick_">
         <button is="paper-icon-button-light" id="checkbox"
-            on-mousedown="onCheckboxMousedown_"
-            on-click="onCheckboxSelected_"
             disabled="[[selectionNotAllowed_()]]"
             role="checkbox"
             aria-checked$="[[getAriaChecked_(selected)]]"
             aria-label$="[[getEntrySummary_(item)]]">
           <div id="checkmark"></div>
         </button>
         <span id="time-accessed" on-mouseover="addTimeTitle_">
           [[item.readableTimestamp]]
         </span>
         <div class="website-icon" id="icon"></div>
@@ skipping 20 matching lines @@
           <div></div>
           <div></div>
           <div></div>
         </button>
       </div>
       <div id="time-gap-separator" hidden="[[!hasTimeGap]]"></div>
     </div>
   </template>
   <script src="chrome://history/history_item.js"></script>
 </dom-module>