Remove net::Filter direct dependency on IsSupportedMimeType

net/base/network_delegate.h

Index: net/base/network_delegate.h
diff --git a/net/base/network_delegate.h b/net/base/network_delegate.h
index 5af2ac140efa5b6f5e0d4fe897d413f7fb31bdde..c465341c817c89ffaf3d46051bc20390eecbf2cf 100644
--- a/net/base/network_delegate.h
+++ b/net/base/network_delegate.h
@@ -109,6 +109,12 @@ class NET_EXPORT NetworkDelegate : public base::NonThreadSafe {
       const GURL& target_url,
       const GURL& referrer_url) const;
 
+  // If we get a response with GZIP encoding, we check if the response mime
+  // type is one of the supported mime types. If it is supported, we will
+  // decompress response to allow it to be displayed directly in browser,
+  // otherwise we'll leave it compressed.
+  bool IsSupportedMimeType(const std::string& mime_type) const;
+
  private:
   // This is the interface for subclasses of NetworkDelegate to implement. These
   // member functions will be called by the respective public notification
@@ -275,6 +281,8 @@ class NET_EXPORT NetworkDelegate : public base::NonThreadSafe {
       const URLRequest& request,
       const GURL& target_url,
       const GURL& referrer_url) const = 0;
+
+  virtual bool OnIsSupportedMimeType(const std::string& mime_type) const = 0;
 };
 
 }  // namespace net