Move most of ChromeV8Context to a base ScriptContext

extensions/common/extensions_client.h

Index: extensions/common/extensions_client.h
diff --git a/extensions/common/extensions_client.h b/extensions/common/extensions_client.h
index 0b2e6cc2c999bf294eb68feeb0375134346dc314..e9fb2005d02ae59ca3a7a1479081b2e38e57ccfb 100644
--- a/extensions/common/extensions_client.h
+++ b/extensions/common/extensions_client.h
@@ -83,6 +83,10 @@ class ExtensionsClient {
   // Appends extra filters to any Features created by the features system.
   virtual void AddExtraFeatureFilters(SimpleFeature* feature) const = 0;
 
+  // Determines if certain fatal extensions errors should be surpressed
+  // (i.e., only logged) or allowed (i.e., logged before crashing).
+  virtual bool ShouldSuppressFatalErrors() const = 0;
+
   // Return the extensions client.
   static ExtensionsClient* Get();