[ios] Moved all web mocks to ios/web/public/test/fakes.

ios/chrome/browser/signin/gaia_auth_fetcher_ios_unittest.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.
 
 #include "ios/chrome/browser/signin/gaia_auth_fetcher_ios.h"
 
 #include <memory>
 
 #import "base/mac/scoped_nsobject.h"
 #include "base/run_loop.h"
 #include "google_apis/gaia/gaia_urls.h"
 #include "ios/chrome/browser/signin/gaia_auth_fetcher_ios_private.h"
-#include "ios/web/public/test/test_browser_state.h"
+#include "ios/web/public/test/fakes/test_browser_state.h"
 #include "ios/web/public/test/test_web_thread_bundle.h"
 #include "net/url_request/test_url_fetcher_factory.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #import "testing/gtest_mac.h"
 #include "testing/platform_test.h"
 #import "third_party/ocmock/OCMock/OCMock.h"
 #import "third_party/ocmock/gtest_support.h"
 
 namespace {
@@ skipping 160 matching lines @@
   [[GetMockWKWebView() expect] setNavigationDelegate:[OCMArg isNotNil]];
   [static_cast<WKWebView*>([[GetMockWKWebView() expect] andDo:^(NSInvocation*) {
     GetBridge()->URLFetchSuccess("data");
   }]) loadRequest:[OCMArg any]];
 
   gaia_auth_fetcher_->StartMergeSession("uber_token", "");
   web::BrowserState::GetActiveStateManager(&browser_state_)->SetActive(false);
   web::BrowserState::GetActiveStateManager(&browser_state_)->SetActive(true);
   EXPECT_OCMOCK_VERIFY(GetMockWKWebView());
 }