Revert of Remove setVoiceSearchSupported part of EmbeddedSearch SearchBox API.

chrome/browser/ui/search/search_ipc_router.cc

Index: chrome/browser/ui/search/search_ipc_router.cc
diff --git a/chrome/browser/ui/search/search_ipc_router.cc b/chrome/browser/ui/search/search_ipc_router.cc
index 18de36433ac9b8ebd33a1c4cf12ea955f2e99aca..72598b24e363ebc75b62b4870f63050fb80fafbb 100644
--- a/chrome/browser/ui/search/search_ipc_router.cc
+++ b/chrome/browser/ui/search/search_ipc_router.cc
@@ -137,6 +137,13 @@
   Send(new ChromeViewMsg_SearchBoxThemeChanged(routing_id(), theme_info));
 }
 
+void SearchIPCRouter::ToggleVoiceSearch() {
+  if (!policy_->ShouldSendToggleVoiceSearch())
+    return;
+
+  Send(new ChromeViewMsg_SearchBoxToggleVoiceSearch(routing_id()));
+}
+
 void SearchIPCRouter::Submit(const base::string16& text,
                              const EmbeddedSearchRequestParams& params) {
   if (!policy_->ShouldSubmitQuery())
@@ -166,6 +173,8 @@
   IPC_BEGIN_MESSAGE_MAP(SearchIPCRouter, message)
     IPC_MESSAGE_HANDLER(ChromeViewHostMsg_InstantSupportDetermined,
                         OnInstantSupportDetermined)
+    IPC_MESSAGE_HANDLER(ChromeViewHostMsg_SetVoiceSearchSupported,
+                        OnVoiceSearchSupportDetermined)
     IPC_MESSAGE_HANDLER(ChromeViewHostMsg_FocusOmnibox, OnFocusOmnibox);
     IPC_MESSAGE_HANDLER(ChromeViewHostMsg_SearchBoxNavigate,
                         OnSearchBoxNavigate);
@@ -199,6 +208,19 @@
   delegate_->OnInstantSupportDetermined(instant_support);
 }
 
+void SearchIPCRouter::OnVoiceSearchSupportDetermined(
+    int page_seq_no,
+    bool supports_voice_search) const {
+  if (page_seq_no != commit_counter_)
+    return;
+
+  delegate_->OnInstantSupportDetermined(true);
+  if (!policy_->ShouldProcessSetVoiceSearchSupport())
+    return;
+
+  delegate_->OnSetVoiceSearchSupport(supports_voice_search);
+}
+
 void SearchIPCRouter::OnFocusOmnibox(int page_seq_no,
                                      OmniboxFocusState state) const {
   if (page_seq_no != commit_counter_)