Added an origin trial for WebShare.

third_party/WebKit/Source/bindings/core/v8/V8Binding.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 819 matching lines @@
     (*s_installOriginTrialsFunction)(scriptState);
 
     // Mark each enabled feature as having been installed.
     if (!originTrialContext->featureBindingsInstalled("DurableStorage") && (RuntimeEnabledFeatures::durableStorageEnabled() || originTrialContext->isFeatureEnabled("DurableStorage"))) {
         originTrialContext->setFeatureBindingsInstalled("DurableStorage");
     }
 
     if (!originTrialContext->featureBindingsInstalled("WebBluetooth") && (RuntimeEnabledFeatures::webBluetoothEnabled() || originTrialContext->isFeatureEnabled("WebBluetooth"))) {
         originTrialContext->setFeatureBindingsInstalled("WebBluetooth");
     }
+
+    if (!originTrialContext->featureBindingsInstalled("WebShare") && (RuntimeEnabledFeatures::webBluetoothEnabled() || originTrialContext->isFeatureEnabled("WebShare"))) {

[esprehn, 2016/08/10 09:35:57]

The Bluetooth check here looks like a mistake?

[Matt Giuca, 2016/08/11 03:08:41]

Ahaha yes. (Although it "happens" to work because both our flag and Bluetooth
are linked to the experimental flag).

+        originTrialContext->setFeatureBindingsInstalled("WebShare");
+    }
 }
 
 InstallOriginTrialsFunction setInstallOriginTrialsFunction(InstallOriginTrialsFunction newInstallOriginTrialsFunction)
 {
     InstallOriginTrialsFunction originalFunction = s_installOriginTrialsFunction;
     s_installOriginTrialsFunction = newInstallOriginTrialsFunction;
     return originalFunction;
 }
 
 void crashIfIsolateIsDead(v8::Isolate* isolate)
@@ skipping 98 matching lines @@
     v8SetReturnValue(info, perContextData->constructorForType(WrapperTypeInfo::unwrap(data)));
 }
 
 v8::Local<v8::Value> freezeV8Object(v8::Local<v8::Value> value, v8::Isolate* isolate)
 {
     value.As<v8::Object>()->SetIntegrityLevel(isolate->GetCurrentContext(), v8::IntegrityLevel::kFrozen).ToChecked();
     return value;
 }
 
 } // namespace blink