Removing WKWebViewSearchParam

This is no longer needed.

BUG=579249

Review URL: https://codereview.chromium.org/1609293003

Cr-Commit-Position: refs/heads/master@{#370717}

components/search_engines/search_terms_data.cc

@@ -64,10 +64,6 @@ std::string SearchTermsData::ForceInstantResultsParam(
   return std::string();
 }
 
-std::string SearchTermsData::IOSWebViewTypeParam() const {
-  return std::string();
-}
-
 std::string SearchTermsData::GoogleImageSearchSource() const {
   return std::string();
 }

components/search_engines/search_terms_data.h

@@ -56,11 +56,6 @@ class SearchTermsData {
   // incrementally.
   virtual std::string ForceInstantResultsParam(bool for_prerender) const;
 
-  // Returns a string indicating which webview is currently in use on iOS,
-  // suitable for adding as a query string param to search requests.  Returns an
-  // empty string if no parameter should be passed along with search requests.
-  virtual std::string IOSWebViewTypeParam() const;
-
   // Returns the value to use for replacements of type
   // GOOGLE_IMAGE_SEARCH_SOURCE.
   virtual std::string GoogleImageSearchSource() const;

ios/chrome/browser/experimental_flags.h

@@ -40,10 +40,6 @@ bool IsTargetedToWKWebViewExperimentControlGroup();
 // Whether the user is part of a control group for the WKWebView experiment.
 bool IsInWKWebViewExperimentControlGroup();
 
-// Returns a string containing extra params that should be sent along with
-// omnibox search requests.  The returned value contains a leading "&".
-std::string GetWKWebViewSearchParams();
-
 // Whether viewing and copying passwords is enabled.
 bool IsViewCopyPasswordsEnabled();
 

ios/chrome/browser/experimental_flags.mm

@@ -184,14 +184,6 @@ bool IsInWKWebViewExperimentControlGroup() {
                           base::CompareCase::INSENSITIVE_ASCII);
 }
 
-std::string GetWKWebViewSearchParams() {
-  if (!CanCheckWKWebViewExperiment()) {
-    return std::string();
-  }
-
-  return variations::GetVariationParamValue(kWKWebViewTrialName, "esrch");
-}
-
 bool IsViewCopyPasswordsEnabled() {
   NSString* viewCopyPasswordFlag = [[NSUserDefaults standardUserDefaults]
       objectForKey:kEnableViewCopyPasswords];

ios/chrome/browser/search_engines/ui_thread_search_terms_data.cc

@@ -103,16 +103,6 @@ std::string UIThreadSearchTermsData::ForceInstantResultsParam(
   return search::ForceInstantResultsParam(for_prerender);
 }
 
-std::string UIThreadSearchTermsData::IOSWebViewTypeParam() const {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  std::string param = experimental_flags::GetWKWebViewSearchParams();
-  if (param.empty()) {
-    return std::string();
-  }
-
-  return "&esrch=" + net::EscapeQueryParamValue(param, true);
-}
-
 std::string UIThreadSearchTermsData::GoogleImageSearchSource() const {
   DCHECK(thread_checker_.CalledOnValidThread());
   std::string version(version_info::GetProductName() + " " +

ios/chrome/browser/search_engines/ui_thread_search_terms_data.h

@@ -28,7 +28,6 @@ class UIThreadSearchTermsData : public SearchTermsData {
   std::string GetSuggestRequestIdentifier() const override;
   std::string InstantExtendedEnabledParam(bool for_search) const override;
   std::string ForceInstantResultsParam(bool for_prerender) const override;
-  std::string IOSWebViewTypeParam() const override;
   std::string GoogleImageSearchSource() const override;
 
  private: