Revert of Remove setVoiceSearchSupported part of EmbeddedSearch SearchBox API.

chrome/browser/ui/search/search_ipc_router_policy_impl.cc

Index: chrome/browser/ui/search/search_ipc_router_policy_impl.cc
diff --git a/chrome/browser/ui/search/search_ipc_router_policy_impl.cc b/chrome/browser/ui/search/search_ipc_router_policy_impl.cc
index 382038a0599a428ffccb99025566b421e0412d03..4a85e2fb19d1b4a2cd51ec0d56dec5b24549ac54 100644
--- a/chrome/browser/ui/search/search_ipc_router_policy_impl.cc
+++ b/chrome/browser/ui/search/search_ipc_router_policy_impl.cc
@@ -21,6 +21,10 @@
 }
 
 SearchIPCRouterPolicyImpl::~SearchIPCRouterPolicyImpl() {}
+
+bool SearchIPCRouterPolicyImpl::ShouldProcessSetVoiceSearchSupport() {
+  return true;
+}
 
 bool SearchIPCRouterPolicyImpl::ShouldProcessFocusOmnibox(bool is_active_tab) {
   return is_active_tab && !is_incognito_ && search::IsInstantNTP(web_contents_);
@@ -92,6 +96,10 @@
   return !is_incognito_ && search::IsInstantNTP(web_contents_);
 }
 
+bool SearchIPCRouterPolicyImpl::ShouldSendToggleVoiceSearch() {
+  return true;
+}
+
 bool SearchIPCRouterPolicyImpl::ShouldSubmitQuery() {
   return true;
 }