Implement {Start,Stop}CapturingKeyStrokes for Instant.

chrome/browser/ui/browser_instant_controller.cc

Index: chrome/browser/ui/browser_instant_controller.cc
diff --git a/chrome/browser/ui/browser_instant_controller.cc b/chrome/browser/ui/browser_instant_controller.cc
index 1ad6c25b6b27792411ac6e05b15e8896b8ca0f24..6c3167c7257c57cbc91a398f0867b8059d253f86 100644
--- a/chrome/browser/ui/browser_instant_controller.cc
+++ b/chrome/browser/ui/browser_instant_controller.cc
@@ -115,6 +115,16 @@ void BrowserInstantController::InstantPreviewFocused() {
       instant_->GetPreviewContents()->web_contents());
 }
 
+void BrowserInstantController::OnWebSearchBoxBlur() {
+  chrome::search::SearchTabHelper::FromWebContents(
+      GetActiveTabContents()->web_contents())->OnWebSearchBoxBlur();
+}
+
+void BrowserInstantController::OnWebSearchBoxFocus() {
+  chrome::search::SearchTabHelper::FromWebContents(
+      GetActiveTabContents()->web_contents())->OnWebSearchBoxFocus();
+}
+
 TabContents* BrowserInstantController::GetActiveTabContents() const {
   return chrome::GetActiveTabContents(browser_);
 }