Remove setVoiceSearchSupported part of EmbeddedSearch SearchBox API.

chrome/browser/ui/cocoa/location_bar/mic_search_decoration.mm

-// Copyright 2013 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.
-
-#import "chrome/browser/ui/cocoa/location_bar/mic_search_decoration.h"
-
-#include "chrome/app/chrome_command_ids.h"
-#include "chrome/browser/command_updater.h"
-#import "chrome/browser/ui/cocoa/omnibox/omnibox_view_mac.h"
-#include "chrome/grit/generated_resources.h"
-#include "grit/theme_resources.h"
-#include "ui/base/l10n/l10n_util_mac.h"
-
-MicSearchDecoration::MicSearchDecoration(CommandUpdater* command_updater)
-    : command_updater_(command_updater) {
-  SetImage(OmniboxViewMac::ImageForResource(IDR_OMNIBOX_MIC_SEARCH));
-}
-
-MicSearchDecoration::~MicSearchDecoration() {
-}
-
-bool MicSearchDecoration::AcceptsMousePress() {
-  return true;
-}
-
-bool MicSearchDecoration::OnMousePressed(NSRect frame, NSPoint location) {
-  command_updater_->ExecuteCommand(IDC_TOGGLE_SPEECH_INPUT);
-  return true;
-}
-
-NSString* MicSearchDecoration::GetToolTip() {
-  return l10n_util::GetNSStringWithFixup(IDS_TOOLTIP_MIC_SEARCH);
-}