Implement {Start,Stop}CapturingKeyStrokes for Instant.

chrome/browser/instant/instant_tab.cc

 // 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.
 
 #include "chrome/browser/instant/instant_tab.h"
 
 #include "chrome/browser/instant/instant_controller.h"
 
 InstantTab::InstantTab(InstantController* controller,
                        content::WebContents* contents)
@@ skipping 49 matching lines @@
     client_.SetContents(NULL);
 
   controller_->InstantSupportDetermined(contents_, supports_instant);
 }
 
 void InstantTab::ShowInstantPreview(InstantShownReason /* reason */,
                                     int /* height */,
                                     InstantSizeUnits /* units */) {
   // The page is a committed tab (i.e., always showing), so nothing to do.
 }
+
+void InstantTab::StartCapturingKeyStrokes() {
+  // We don't honor this call from committed tabs.
+}
+
+void InstantTab::StopCapturingKeyStrokes() {
+  // We don't honor this call from committed tabs.
+}