A simple version of search term replacement for testing .

chrome/browser/google/google_util.cc

Index: chrome/browser/google/google_util.cc
diff --git a/chrome/browser/google/google_util.cc b/chrome/browser/google/google_util.cc
index 1e5945984b18014f8518b5fbef89f64b43489b5e..cfe0911d8a503014ec8a2fc32a84f8de47863141 100644
--- a/chrome/browser/google/google_util.cc
+++ b/chrome/browser/google/google_util.cc
@@ -20,6 +20,7 @@
 #include "chrome/installer/util/google_update_settings.h"
 #include "googleurl/src/gurl.h"
 #include "googleurl/src/url_parse.h"
+#include "net/base/escape.h"
 #include "net/base/registry_controlled_domains/registry_controlled_domain.h"
 
 #if defined(OS_MACOSX)
@@ -137,6 +138,26 @@ bool GetReactivationBrand(std::string* brand) {
 
 #endif
 
+string16 GetSearchTermsFromGoogleSearchURL(const GURL& url) {
+  if (!IsInstantExtendedAPIGoogleSearchUrl(url.spec()))
+    return string16();
+
+  std::vector<std::pair<std::string, std::string> > key_value_pairs;
+  base::SplitStringIntoKeyValuePairs(url.query(), '=', '&', &key_value_pairs);

[Ilya Sherman, 2012/08/23 19:50:51]

Optional nit: Did you consider using ExtractQueryKeyValue() from googleurl's
url_parse.h?

[dominich, 2012/08/23 20:45:37]

Thanks for the pointer - that's much better.

+  for (std::vector<std::pair<std::string, std::string> >::const_iterator it =
+       key_value_pairs.begin(); it != key_value_pairs.end(); ++it) {
+    if (it->first == "q") {
+      return net::UnescapeAndDecodeUTF8URLComponent(
+          it->second,
+          net::UnescapeRule::SPACES |
+              net::UnescapeRule::URL_SPECIAL_CHARS |
+              net::UnescapeRule::REPLACE_PLUS_WITH_SPACE,
+          NULL);
+    }
+  }
+  return string16();
+}
+
 bool IsGoogleDomainUrl(const std::string& url, SubdomainPermission permission) {
   GURL original_url(url);
   return original_url.is_valid() && original_url.port().empty() &&