Switch to LayoutThemeMobile when emulating mobile device in DevTools.

third_party/WebKit/Source/core/layout/LayoutTheme.h

Index: third_party/WebKit/Source/core/layout/LayoutTheme.h
diff --git a/third_party/WebKit/Source/core/layout/LayoutTheme.h b/third_party/WebKit/Source/core/layout/LayoutTheme.h
index bab7c4d71755405f87ac3d977da8538c289c2e0e..31a7cad3e1696461b8879ce4a21c1355b4a6504a 100644
--- a/third_party/WebKit/Source/core/layout/LayoutTheme.h
+++ b/third_party/WebKit/Source/core/layout/LayoutTheme.h
@@ -43,13 +43,11 @@ class ThemePainter;
 
 class CORE_EXPORT LayoutTheme : public RefCounted<LayoutTheme> {
 protected:
-    LayoutTheme();
+    explicit LayoutTheme(Theme*);
 
 public:
     virtual ~LayoutTheme() { }
 
-    // This function is to be implemented in your platform-specific theme implementation to hand back the
-    // appropriate platform theme.
     static LayoutTheme& theme();
 
     virtual ThemePainter& painter() = 0;
@@ -202,7 +200,6 @@ protected:
 
     virtual bool themeDrawsFocusRing(const ComputedStyle&) const = 0;
 
-#if !USE(NEW_THEME)
     // Methods for each appearance value.
     virtual void adjustCheckboxStyle(ComputedStyle&) const;
     virtual void setCheckboxSize(ComputedStyle&) const { }
@@ -212,7 +209,6 @@ protected:
 
     virtual void adjustButtonStyle(ComputedStyle&) const;
     virtual void adjustInnerSpinButtonStyle(ComputedStyle&) const;
-#endif
 
     virtual void adjustMenuListStyle(ComputedStyle&, Element*) const;
     virtual void adjustMenuListButtonStyle(ComputedStyle&, Element*) const;
@@ -225,6 +221,8 @@ protected:
     void adjustCheckboxStyleUsingFallbackTheme(ComputedStyle&) const;
     void adjustRadioStyleUsingFallbackTheme(ComputedStyle&) const;
 
+    bool hasPlatformTheme() const { return m_platformTheme; }
+
 public:
     // Methods for state querying
     static ControlStates controlStatesForLayoutObject(const LayoutObject&);
@@ -240,6 +238,10 @@ public:
     static bool isReadOnlyControl(const LayoutObject&);
 
 private:
+    // This function is to be implemented in your platform-specific theme implementation to hand back the
+    // appropriate platform theme.
+    static LayoutTheme& nativeTheme();
+
     Color m_customFocusRingColor;
     bool m_hasCustomFocusRingColor;
 
@@ -249,9 +251,7 @@ private:
 
     static const RGBA32 defaultCompositionBackgroundColor = 0xFFFFDD55;
 
-#if USE(NEW_THEME)
     Theme* m_platformTheme; // The platform-specific theme.
-#endif
 };
 
 } // namespace blink