[DevTools] Handle emulated device scale factor and original device scale factor properly.

content/renderer/render_view_impl.h

 // Copyright (c) 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.
 
 #ifndef CONTENT_RENDERER_RENDER_VIEW_IMPL_H_
 #define CONTENT_RENDERER_RENDER_VIEW_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 532 matching lines @@
   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, OnUpdateWebPreferences);
   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest,
                            SetEditableSelectionAndComposition);
   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, StaleNavigationsIgnored);
   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest,
                            DontIgnoreBackAfterNavEntryLimit);
   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, UpdateTargetURLWithInvalidURL);
   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest,
                            GetCompositionCharacterBoundsTest);
   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, OnNavigationHttpPost);
-  FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, ScreenMetricsEmulation);
+  FRIEND_TEST_ALL_PREFIXES(RenderViewImplScaleFactorTest,
+                           ScreenMetricsEmulationWithOriginalDSF1);
+  FRIEND_TEST_ALL_PREFIXES(RenderViewImplScaleFactorTest,
+                           ScreenMetricsEmulationWithOriginalDSF2);
   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest,
                            DecideNavigationPolicyHandlesAllTopLevel);
 #if defined(OS_MACOSX)
   FRIEND_TEST_ALL_PREFIXES(RenderViewTest, MacTestCmdUp);
 #endif
   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, SetHistoryLengthAndOffset);
   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, ZoomLimit);
   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, NavigateFrame);
   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, BasicRenderFrame);
   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, TextInputTypeWithPepper);
@@ skipping 452 matching lines @@
   // use the Observer interface to filter IPC messages and receive frame change
   // notifications.
   // ---------------------------------------------------------------------------
 
   DISALLOW_COPY_AND_ASSIGN(RenderViewImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_VIEW_IMPL_H_