[ios] Removed unused CRWWebControllerObserver methods.

ios/web/test/crw_fake_web_controller_observer_unittest.mm

-// Copyright 2014 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/test/crw_fake_web_controller_observer.h"
-
-#import "base/mac/scoped_nsobject.h"
-#include "base/memory/scoped_vector.h"
-#include "base/values.h"
-#include "testing/gtest/include/gtest/gtest.h"
-#include "testing/gtest_mac.h"
-#include "testing/platform_test.h"
-#include "url/gurl.h"
-
-namespace web {
-namespace {
-class CRWFakeWebControllerObserverTest : public PlatformTest {
- public:
-  void SetUp() override {
-    fake_web_controller_observer_.reset([[CRWFakeWebControllerObserver alloc]
-        initWithCommandPrefix:@"test"]);
-  }
- protected:
-  base::scoped_nsobject<CRWFakeWebControllerObserver>
-      fake_web_controller_observer_;
-};
-
-// Tests that a CRWFakeWebControllerObserver can be correctly initialized with
-// a command prefix.
-TEST_F(CRWFakeWebControllerObserverTest, CommandPrefix) {
-  EXPECT_NSEQ(@"test", [fake_web_controller_observer_ commandPrefix]);
-}
-
-// Tests that the CRWFakeWebControllerObserver correctly stores a command
-// received.
-TEST_F(CRWFakeWebControllerObserverTest, Command) {
-  // Arbitrary values.
-  base::DictionaryValue command;
-  command.SetBoolean("samp", true);
-  [fake_web_controller_observer_ handleCommand:command
-                                 webController:nil
-                             userIsInteracting:NO
-                                     originURL:GURL("http://google.com")];
-
-  ScopedVector<base::DictionaryValue>& commands_received =
-      [fake_web_controller_observer_ commandsReceived];
-  EXPECT_EQ(1U, commands_received.size());
-  bool samp = false;
-  commands_received[0]->GetBoolean("samp", &samp);
-  EXPECT_TRUE(samp);
-}
-
-}  // namespace
-}  // namespace web