Implement people search.

chrome/browser/ui/app_list/search/common/webservice_search_provider.cc

Index: chrome/browser/ui/app_list/search/common/webservice_search_provider.cc
diff --git a/chrome/browser/ui/app_list/search/common/webservice_search_provider.cc b/chrome/browser/ui/app_list/search/common/webservice_search_provider.cc
index b651e5d13289f3e33594578a823ac38bc17f0875..f418495f87850d047fd35feb4f55ab56a1363b4c 100644
--- a/chrome/browser/ui/app_list/search/common/webservice_search_provider.cc
+++ b/chrome/browser/ui/app_list/search/common/webservice_search_provider.cc
@@ -8,6 +8,7 @@
 
 #include "base/callback.h"
 #include "base/strings/string_util.h"
+#include "chrome/browser/search/search.h"
 #include "chrome/common/url_constants.h"
 #include "url/gurl.h"
 
@@ -16,10 +17,12 @@ namespace app_list {
 namespace {
 
 const int kWebserviceQueryThrottleIntrevalInMs = 100;
+const size_t kMinimumQueryLength = 3u;
 
 }  // namespace
 
-WebserviceSearchProvider::WebserviceSearchProvider() : use_throttling_(true) {}
+WebserviceSearchProvider::WebserviceSearchProvider(Profile* profile)
+    : profile_(profile), use_throttling_(true) {}
 
 WebserviceSearchProvider::~WebserviceSearchProvider() {}
 
@@ -36,6 +39,18 @@ void WebserviceSearchProvider::StartThrottledQuery(
   last_keytyped_ = base::Time::Now();
 }
 
+bool WebserviceSearchProvider::IsValidQuery(const string16& query) {
+  // If |query| contains sensitive data, bail out and do not create the place
+  // holder "search-web-store" result.
+  if (IsSensitiveInput(query) ||
+      (query.size() < kMinimumQueryLength) ||
+      !chrome::IsSuggestPrefEnabled(profile_)) {
+    return false;
+  }
+
+  return true;
+}
+
 // Returns whether or not the user's input string, |query|, might contain any
 // sensitive information, based purely on its value and not where it came from.
 bool WebserviceSearchProvider::IsSensitiveInput(const string16& query) {