Add an alternate contextual search url to extract the search terms from window.location.hash.

BUG=456353

Review URL: https://codereview.chromium.org/922793002

Cr-Commit-Position: refs/heads/master@{#316370}

chrome/common/instant_types.cc

@@ -92,7 +92,7 @@ EmbeddedSearchRequestParams::EmbeddedSearchRequestParams() {
 }
 
 EmbeddedSearchRequestParams::EmbeddedSearchRequestParams(const GURL& url) {
-  const std::string& url_params(url.query());
+  const std::string& url_params(url.ref().empty()? url.query() : url.ref());
   url::Component query, key, value;
   query.len = static_cast<int>(url_params.size());
 

chrome/common/instant_types_unittest.cc

@@ -49,6 +49,13 @@ TEST(EmbeddedSearchRequestParams, ExtractParams) {
      "utf-8",
      "chrome.2.65.j04"
     },
+    {"https://foo/search?q=google#q=fun&oq=f&ie=utf-8&aqs=chrome.0.1",
+     "fun",
+     "f",
+     "",
+     "utf-8",
+     "chrome.0.1"
+    },
   };
 
   for (size_t i = 0; i < arraysize(cases); ++i) {

components/search_engines/prepopulated_engines.json

@@ -30,7 +30,7 @@
 
     // Increment this if you change the data in ways that mean users with
     // existing data should get a new version.
-    "kCurrentDataVersion": 80
+    "kCurrentDataVersion": 81
   },
 
   // The following engines are included in country lists and are added to the
@@ -120,6 +120,7 @@
         "{google:baseURL}#q={searchTerms}",
         "{google:baseURL}search#q={searchTerms}",
         "{google:baseURL}webhp#q={searchTerms}",
+        "{google:baseURL}s#q={searchTerms}",
         "{google:baseURL}s?q={searchTerms}"
       ],
       "search_terms_replacement_key": "{google:instantExtendedEnabledKey}",