Reland of [DevTools] Move screen orientation override to RenderWidgetScreenMetricsEmulator.

third_party/WebKit/public/web/WebDeviceEmulationParams.h

Index: third_party/WebKit/public/web/WebDeviceEmulationParams.h
diff --git a/third_party/WebKit/public/web/WebDeviceEmulationParams.h b/third_party/WebKit/public/web/WebDeviceEmulationParams.h
index c1e8f4ca842e2a4edacfe7949092d9ca2acdaf37..85f9f7c466540104fcd230c409a7f8011188a696 100644
--- a/third_party/WebKit/public/web/WebDeviceEmulationParams.h
+++ b/third_party/WebKit/public/web/WebDeviceEmulationParams.h
@@ -9,6 +9,7 @@
 #include "../platform/WebPoint.h"
 #include "../platform/WebRect.h"
 #include "../platform/WebSize.h"
+#include "../platform/modules/screen_orientation/WebScreenOrientationType.h"
 
 namespace blink {
 
@@ -45,16 +46,27 @@
     // Scale of emulated view inside available space, not in fit to view mode.
     float scale;
 
+    // Optional screen orientation type, with WebScreenOrientationUndefined
+    // value meaning no emulation necessary.
+    WebScreenOrientationType screenOrientationType;
+
+    // Screen orientation angle, used together with screenOrientationType.
+    int screenOrientationAngle;
+
     WebDeviceEmulationParams()
         : screenPosition(Desktop)
         , deviceScaleFactor(0)
         , fitToView(false)
-        , scale(1) { }
+        , scale(1)
+        , screenOrientationType(WebScreenOrientationUndefined)
+        , screenOrientationAngle(0) { }
 };
 
 inline bool operator==(const WebDeviceEmulationParams& a, const WebDeviceEmulationParams& b)
 {
-    return a.screenPosition == b.screenPosition && a.screenSize == b.screenSize && a.viewPosition == b.viewPosition && a.deviceScaleFactor == b.deviceScaleFactor && a.viewSize == b.viewSize && a.fitToView == b.fitToView && a.offset == b.offset && a.scale == b.scale;
+    return a.screenPosition == b.screenPosition && a.screenSize == b.screenSize && a.viewPosition == b.viewPosition && a.deviceScaleFactor == b.deviceScaleFactor
+        && a.viewSize == b.viewSize && a.fitToView == b.fitToView && a.offset == b.offset && a.scale == b.scale
+        && a.screenOrientationType == b.screenOrientationType && a.screenOrientationAngle == b.screenOrientationAngle;
 }
 
 inline bool operator!=(const WebDeviceEmulationParams& a, const WebDeviceEmulationParams& b)