[WebGL-blink] Add test function to force fail the webgl-context

Source/web/WebViewImpl.cpp

Index: Source/web/WebViewImpl.cpp
diff --git a/Source/web/WebViewImpl.cpp b/Source/web/WebViewImpl.cpp
index d002f3e658c7938c78fc23dd505c927885655d79..9fbcbea812629b3fb4d761caed2b770b34660d22 100644
--- a/Source/web/WebViewImpl.cpp
+++ b/Source/web/WebViewImpl.cpp
@@ -61,6 +61,7 @@
 #include "core/html/HTMLMediaElement.h"
 #include "core/html/HTMLPlugInElement.h"
 #include "core/html/HTMLTextAreaElement.h"
+#include "core/html/canvas/WebGLRenderingContext.h"
 #include "core/html/ime/InputMethodContext.h"
 #include "core/inspector/InspectorController.h"
 #include "core/loader/DocumentLoader.h"
@@ -4482,4 +4483,9 @@ bool WebViewImpl::shouldDisableDesktopWorkarounds()
         || (constraints.minimumScale == constraints.maximumScale && constraints.minimumScale != -1);
 }
 
+void WebViewImpl::forceNextWebGLContextCreationToFail(bool forceFailContext)
+{
+    WebGLRenderingContext::forceNextWebGLContextCreationToFail(forceFailContext);
+}
+
 } // namespace blink