DevTools: explicitly control support for viewport meta tag so that desktop emulation was possible

Source/core/inspector/InspectorPageAgent.h

Index: Source/core/inspector/InspectorPageAgent.h
diff --git a/Source/core/inspector/InspectorPageAgent.h b/Source/core/inspector/InspectorPageAgent.h
index d919c822d05c12ddf118aefc274f66f391c95641..7bce277a346cca405e4bef5b765f44fc0fea9563 100644
--- a/Source/core/inspector/InspectorPageAgent.h
+++ b/Source/core/inspector/InspectorPageAgent.h
@@ -99,7 +99,7 @@ public:
     virtual void getResourceContent(ErrorString*, const String& frameId, const String& url, String* content, bool* base64Encoded);
     virtual void searchInResource(ErrorString*, const String& frameId, const String& url, const String& query, const bool* optionalCaseSensitive, const bool* optionalIsRegex, RefPtr<TypeBuilder::Array<TypeBuilder::Page::SearchMatch> >&);
     virtual void setDocumentContent(ErrorString*, const String& frameId, const String& html);
-    virtual void setDeviceMetricsOverride(ErrorString*, int width, int height, double deviceScaleFactor, bool fitWindow, const bool* optionalTextAutosizing, const double* optionalFontScaleFactor);
+    virtual void setDeviceMetricsOverride(ErrorString*, int width, int height, double deviceScaleFactor, bool emulateViewport, bool fitWindow, const bool* optionalTextAutosizing, const double* optionalFontScaleFactor);
     virtual void setShowPaintRects(ErrorString*, bool show);
     virtual void setShowDebugBorders(ErrorString*, bool show);
     virtual void setShowFPSCounter(ErrorString*, bool show);
@@ -182,8 +182,8 @@ private:
     static void resourceContent(ErrorString*, Frame*, const KURL&, String* result, bool* base64Encoded);
 
     InspectorPageAgent(InstrumentingAgents*, Page*, InspectorCompositeState*, InjectedScriptManager*, InspectorClient*, InspectorOverlay*);
-    bool deviceMetricsChanged(int width, int height, double deviceScaleFactor, bool fitWindow, double fontScaleFactor, bool textAutosizing);
-    void updateViewMetrics(int width, int height, double deviceScaleFactor, bool fitWindow);
+    bool deviceMetricsChanged(int width, int height, double deviceScaleFactor, bool emulateViewport, bool fitWindow, double fontScaleFactor, bool textAutosizing);
+    void updateViewMetrics(int width, int height, double deviceScaleFactor, bool emulateViewport, bool fitWindow);
     void updateTouchEventEmulationInPage(bool);
 
     static bool dataContent(const char* data, unsigned size, const String& textEncodingName, bool withBase64Encode, String* result);