Implement {Start,Stop}CapturingKeyStrokes for Instant.

chrome/renderer/searchbox/searchbox_extension.cc

Index: chrome/renderer/searchbox/searchbox_extension.cc
diff --git a/chrome/renderer/searchbox/searchbox_extension.cc b/chrome/renderer/searchbox/searchbox_extension.cc
index 54e5e911b75450e21b162d1bd4c96edff2df8d7f..5174833e50ad91a63480de6cebef9868efe8d4f5 100644
--- a/chrome/renderer/searchbox/searchbox_extension.cc
+++ b/chrome/renderer/searchbox/searchbox_extension.cc
@@ -192,6 +192,12 @@ class SearchBoxExtensionWrapper : public v8::Extension {
   // restricted ID.
   static v8::Handle<v8::Value> NavigateContentWindow(const v8::Arguments& args);
 
+  // Handle a focus event in the web searchbox.
+  static v8::Handle<v8::Value> WebSearchBoxGotFocus(const v8::Arguments& args);
+
+  // Handle a blur event in the web searchbox.
+  static v8::Handle<v8::Value> WebSearchBoxLostFocus(const v8::Arguments& args);
+
   // Sets ordered suggestions. Valid for current |value|.
   static v8::Handle<v8::Value> SetSuggestions(const v8::Arguments& args);
 
@@ -247,6 +253,10 @@ v8::Handle<v8::FunctionTemplate> SearchBoxExtensionWrapper::GetNativeFunction(
     return v8::FunctionTemplate::New(GetContext);
   if (name->Equals(v8::String::New("NavigateContentWindow")))
     return v8::FunctionTemplate::New(NavigateContentWindow);
+  if (name->Equals(v8::String::New("WebSearchBoxGotFocus")))
+    return v8::FunctionTemplate::New(WebSearchBoxGotFocus);
+  if (name->Equals(v8::String::New("WebSearchBoxLostFocus")))
+    return v8::FunctionTemplate::New(WebSearchBoxLostFocus);
   if (name->Equals(v8::String::New("SetSuggestions")))
     return v8::FunctionTemplate::New(SetSuggestions);
   if (name->Equals(v8::String::New("SetQuerySuggestion")))
@@ -425,6 +435,24 @@ v8::Handle<v8::Value> SearchBoxExtensionWrapper::NavigateContentWindow(
 }
 
 // static
+v8::Handle<v8::Value> SearchBoxExtensionWrapper::WebSearchBoxGotFocus(
+    const v8::Arguments& args) {
+  content::RenderView* render_view = GetRenderView();
+  if (render_view)
+    SearchBox::Get(render_view)->OnWebSearchBoxFocus();
+  return v8::Undefined();
+}
+
+// static
+v8::Handle<v8::Value> SearchBoxExtensionWrapper::WebSearchBoxLostFocus(
+    const v8::Arguments& args) {
+  content::RenderView* render_view = GetRenderView();
+  if (render_view)
+    SearchBox::Get(render_view)->OnWebSearchBoxBlur();
+  return v8::Undefined();
+}
+
+// static
 v8::Handle<v8::Value> SearchBoxExtensionWrapper::SetSuggestions(
     const v8::Arguments& args) {
   content::RenderView* render_view = GetRenderView();