[ios] Removed deprecated JS execution API.

ios/web/web_state/js/crw_js_injection_manager.mm

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "ios/web/public/web_state/js/crw_js_injection_manager.h"
 
 #import <UIKit/UIKit.h>
 
 #include "base/logging.h"
 #include "base/mac/bundle_locations.h"
@@ skipping 38 matching lines @@
   if ([self hasBeenInjected])
     return;
   [_receiver injectScript:[self injectionContent] forClass:[self class]];
   DCHECK([self hasBeenInjected]);
 }
 
 - (void)lowMemoryWarning:(NSNotification*)notify {
   _injectObject.reset();
 }
 
-- (void)evaluate:(NSString*)script
-    stringResultHandler:(web::JavaScriptCompletion)completionHandler {
-  [_receiver evaluateJavaScript:script stringResultHandler:completionHandler];
-}
-
 - (void)executeJavaScript:(NSString*)script
         completionHandler:(web::JavaScriptResultBlock)completionHandler {
   [_receiver executeJavaScript:script completionHandler:completionHandler];
 }
 
 #pragma mark -
 #pragma mark ProtectedMethods
 
 - (CRWJSInjectionReceiver*)receiver {
   return _receiver;
 }
 
 - (NSString*)scriptPath {
   NOTREACHED();
   return nil;
 }
 
 - (NSString*)injectionContent {
   if (!_injectObject)
     _injectObject.reset([[self staticInjectionContent] copy]);
   return _injectObject.get();
 }
 
 - (NSString*)staticInjectionContent {
   return web::GetPageScript([self scriptPath]);
 }
 
 @end