Split up ios/web:test_support.

ios/web/browser_state_web_view_partition_inttest.mm

 // Copyright 2015 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 <WebKit/WebKit.h>
 
 #include <memory>
 #include <string>
 
 #include "base/mac/foundation_util.h"
 #import "base/mac/scoped_nsobject.h"
 #include "base/memory/ptr_util.h"
 #import "base/test/ios/wait_util.h"
 #include "base/test/test_timeouts.h"
 #include "ios/web/public/browser_state.h"
-#import "ios/web/public/test/http_server.h"
+#import "ios/web/public/test/http_server/http_server.h"
+#import "ios/web/public/test/http_server/string_response_provider.h"
 #import "ios/web/public/test/js_test_util.h"
-#import "ios/web/public/test/response_providers/string_response_provider.h"
 #import "ios/web/public/web_view_creation_util.h"
 #import "ios/web/test/web_int_test.h"
 #import "net/base/mac/url_conversions.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #import "testing/gtest_mac.h"
 
 // A WKNavigationDelegate that is used to check if a WKWebView has finished
 // a navigation. Used for testing purposes.
 @interface TestNavigationDelegate : NSObject <WKNavigationDelegate>
 // YES if a navigation has finished.
@@ skipping 145 matching lines @@
   SetLocalStorageItem(@"someKey2", @"someValue2", web_view_2);
   // Due to platform limitation, it's not possible to actually set localStorage
   // item on an OTR BrowserState. Therefore, it's not possible to verify that a
   // localStorage item has been correctly set.
   // Look at
   // http://stackoverflow.com/questions/14555347/html5-localstorage-error-with-safari-quota-exceeded-err-dom-exception-22-an
   // for more details.
   // Test that LocalStorage has not leaked over to |web_view_1|.
   EXPECT_NSEQ([NSNull null], GetLocalStorageItem(@"someKey2", web_view_1));
 }