Renamed deviceScaleFactor() to deviceScaleFactorDeprecated() in Page

third_party/WebKit/Source/core/page/Page.h

Index: third_party/WebKit/Source/core/page/Page.h
diff --git a/third_party/WebKit/Source/core/page/Page.h b/third_party/WebKit/Source/core/page/Page.h
index 53fbb15b23e069a362494daf78758a4412a3dc44..32b7bcfaadcab46fa98eecc43278032f78793e25 100644
--- a/third_party/WebKit/Source/core/page/Page.h
+++ b/third_party/WebKit/Source/core/page/Page.h
@@ -69,7 +69,7 @@ class WebLayerTreeView;
 
 typedef uint64_t LinkHash;
 
-float deviceScaleFactor(LocalFrame*);
+float deviceScaleFactorDeprecated(LocalFrame*);
 
 class CORE_EXPORT Page final : public GarbageCollectedFinalized<Page>,
                                public Supplementable<Page>,
@@ -199,8 +199,18 @@ class CORE_EXPORT Page final : public GarbageCollectedFinalized<Page>,
   void setPageScaleFactor(float);
   float pageScaleFactor() const;
 
-  float deviceScaleFactor() const { return m_deviceScaleFactor; }
-  void setDeviceScaleFactor(float);
+  // Corresponds to pixel density of the device where this Page is
+  // being displayed. In multi-monitor setups this can vary between pages.
+  // This value does not account for Page zoom, use LocalFrame::devicePixelRatio
+  // instead.  This is to be deprecated. Use this with caution.
+  // 1) If you need to scale the content per device scale factor, this is still
+  //    valid.  In use-zoom-for-dsf mode, this is always 1, and will be remove
+  //    when transition is complete.
+  // 2) If you want to compute the device related measure (such as device pixel
+  //    height, or the scale factor for drag image), use
+  //    ChromeClient::screenInfo() instead.
+  float deviceScaleFactorDeprecated() const { return m_deviceScaleFactor; }
+  void setDeviceScaleFactorDeprecated(float);
 
   static void allVisitedStateChanged(bool invalidateVisitedLinkHashes);
   static void visitedStateChanged(LinkHash visitedHash);