Revert of Remove setVoiceSearchSupported part of EmbeddedSearch SearchBox API.

chrome/renderer/searchbox/searchbox.cc

Index: chrome/renderer/searchbox/searchbox.cc
diff --git a/chrome/renderer/searchbox/searchbox.cc b/chrome/renderer/searchbox/searchbox.cc
index d231c81b245cc837013e0ca57ee98a935d2886a4..8d84d8ccfa723934f1a33ef1244c0796cf933644 100644
--- a/chrome/renderer/searchbox/searchbox.cc
+++ b/chrome/renderer/searchbox/searchbox.cc
@@ -336,6 +336,11 @@
 void SearchBox::Paste(const base::string16& text) {
   render_view()->Send(new ChromeViewHostMsg_PasteAndOpenDropdown(
       render_view()->GetRoutingID(), page_seq_no_, text));
+}
+
+void SearchBox::SetVoiceSearchSupported(bool supported) {
+  render_view()->Send(new ChromeViewHostMsg_SetVoiceSearchSupported(
+      render_view()->GetRoutingID(), page_seq_no_, supported));
 }
 
 void SearchBox::StartCapturingKeyStrokes() {
@@ -387,6 +392,8 @@
     IPC_MESSAGE_HANDLER(ChromeViewMsg_SearchBoxSubmit, OnSubmit)
     IPC_MESSAGE_HANDLER(ChromeViewMsg_SearchBoxThemeChanged,
                         OnThemeChanged)
+    IPC_MESSAGE_HANDLER(ChromeViewMsg_SearchBoxToggleVoiceSearch,
+                        OnToggleVoiceSearch)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
@@ -536,6 +543,13 @@
   }
 }
 
+void SearchBox::OnToggleVoiceSearch() {
+  if (render_view()->GetWebView() && render_view()->GetWebView()->mainFrame()) {
+    extensions_v8::SearchBoxExtension::DispatchToggleVoiceSearch(
+        render_view()->GetWebView()->mainFrame());
+  }
+}
+
 GURL SearchBox::GetURLForMostVisitedItem(InstantRestrictedID item_id) const {
   InstantMostVisitedItem item;
   return GetMostVisitedItemWithID(item_id, &item) ? item.url : GURL();