Merge 98185 - [chromium] Make setVisibility extension- and thread-correct

Source/WebKit/chromium/tests/MockWebGraphicsContext3D.h

Index: Source/WebKit/chromium/tests/MockWebGraphicsContext3D.h
===================================================================
--- Source/WebKit/chromium/tests/MockWebGraphicsContext3D.h	(revision 99500)
+++ Source/WebKit/chromium/tests/MockWebGraphicsContext3D.h	(working copy)
@@ -60,6 +60,8 @@
     virtual void* mapTexSubImage2DCHROMIUM(WGC3Denum target, WGC3Dint level, WGC3Dint xoffset, WGC3Dint yoffset, WGC3Dsizei width, WGC3Dsizei height, WGC3Denum format, WGC3Denum type, WGC3Denum access) { return 0; }
     virtual void unmapTexSubImage2DCHROMIUM(const void*) { }
 
+    virtual void setVisibilityCHROMIUM(bool visible) { }
+
     virtual WebString getRequestableExtensionsCHROMIUM() { return WebString(); }
     virtual void requestExtensionCHROMIUM(const char*) { }