Add Blink setting to block doc.written scripts on 2g-like networks

third_party/WebKit/Source/core/testing/Internals.idl

Index: third_party/WebKit/Source/core/testing/Internals.idl
diff --git a/third_party/WebKit/Source/core/testing/Internals.idl b/third_party/WebKit/Source/core/testing/Internals.idl
index 49dbe8bd5e83ab0b5096d01b5571ac5a2c22a280..f1b512ebc488d7dc58c97045f1c1108d277afb2f 100644
--- a/third_party/WebKit/Source/core/testing/Internals.idl
+++ b/third_party/WebKit/Source/core/testing/Internals.idl
@@ -303,6 +303,10 @@
     [RaisesException] void setNetworkConnectionInfoOverride(boolean onLine, DOMString type, double downlinkMaxMbps);
     void clearNetworkConnectionInfoOverride();
 
+    // These functions are for testing the effective connection type. You must call clearEffectiveConnectionTypeOverride at the end.
+    [RaisesException] void setEffectiveConnectionTypeOverride(DOMString type);

[Nate Chapin, 2016/09/16 21:56:41]

These APIs want to override logic that doesn't reside in blink, so Internals
isn't the right API. These should go on the testRunner API, which is implemented
out in components/test_runner/. That also removes the need for test-only values
in RenderFrameImpl, as WebFrameTestClient can peak at testRunner settings and
defer to RenderFrameImpl iff a test override isn't set.

[jkarlin, 2016/09/19 14:38:25]

With the testRunner API, I'd have to configure the test via test_interfaces.cc
to have the correct override, is that correct? That's non-obvious. I'd much
rather have something configurable from JavaScript, much like we already have
for configuring the network type that the NetworkStateNotifier returns.

+    void clearEffectiveConnectionTypeOverride();
+
     // This function is for testing HitRegions on Canvas2D.
     unsigned long countHitRegions(CanvasRenderingContext2D context);