[DevTools] Use device metrics emulation implemented in content.

Source/core/inspector/InspectorInstrumentation.idl

Index: Source/core/inspector/InspectorInstrumentation.idl
diff --git a/Source/core/inspector/InspectorInstrumentation.idl b/Source/core/inspector/InspectorInstrumentation.idl
index 578c8572e0a856586403534929348587160db2f1..010a21b4bc013430aa406ff4cd0600a8a7e998bb 100644
--- a/Source/core/inspector/InspectorInstrumentation.idl
+++ b/Source/core/inspector/InspectorInstrumentation.idl
@@ -242,12 +242,6 @@ interface InspectorInstrumentation {
     void applyUserAgentOverride(Frame*, String* userAgent);
 
     [Page, Inline=FastReturn]
-    void applyScreenWidthOverride(Frame*, long* width);
-
-    [Page, Inline=FastReturn]
-    void applyScreenHeightOverride(Frame*, long* height);
-
-    [Page, Inline=FastReturn]
     void applyEmulatedMedia(Frame*, String* media);
 
     [Timeline, Resource]
@@ -491,12 +485,6 @@ interface InspectorOverrides {
     [CSS, Inline=FastReturn]
     bool forcePseudoState([Keep] Element* element, CSSSelector::PseudoType pseudoState);
 
-    [Page, Inline=FastReturn]
-    bool shouldApplyScreenWidthOverride(Frame* frame);
-
-    [Page, Inline=FastReturn]
-    bool shouldApplyScreenHeightOverride(Frame* frame);
-
     [Worker, Inline=FastReturn]
     bool shouldPauseDedicatedWorkerOnStart(ScriptExecutionContext* context);