Makes the InputMethodEngine can be switched per profile when the top-level browser window is switch…

chrome/browser/ui/input_method/input_method_engine_unittest.cc

 // Copyright 2016 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 "base/message_loop/message_loop.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/ui/input_method/input_method_engine.h"
 #include "chrome/browser/ui/input_method/input_method_engine_base.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/test/test_utils.h"
@@ skipping 89 matching lines @@
                                 const std::string& text,
                                 int cursor_pos,
                                 int anchor_pos,
                                 int offset) override {
     calls_bitmap_ |= ONSURROUNDINGTEXTCHANGED;
     surrounding_info_.text = text;
     surrounding_info_.focus = cursor_pos;
     surrounding_info_.anchor = anchor_pos;
     surrounding_info_.offset = offset;
   }
+  void OnRequestEngineSwitch() override {}
 
   // Returns and resets the bitmap |calls_bitmap_|.
   unsigned char GetCallsBitmapAndReset() {
     unsigned char ret = calls_bitmap_;
     calls_bitmap_ = NONE;
     return ret;
   }
 
   const InputMethodEngineBase::KeyboardEvent& GetKeyEvent() {
     return key_event_;
@@ skipping 131 matching lines @@
                               0 /*focused position*/, 1 /*anchor position*/,
                               0 /*offset position*/);
   EXPECT_EQ(ONSURROUNDINGTEXTCHANGED, observer_->GetCallsBitmapAndReset());
   EXPECT_EQ("text", observer_->GetSurroundingInfo().text);
   EXPECT_EQ(0, observer_->GetSurroundingInfo().focus);
   EXPECT_EQ(1, observer_->GetSurroundingInfo().anchor);
   EXPECT_EQ(0, observer_->GetSurroundingInfo().offset);
 }
 
 }  // namespace input_method