Added a method to detect all supported "image/*" MIME types

content/child/simple_webmimeregistry_impl.cc

Index: content/child/simple_webmimeregistry_impl.cc
diff --git a/content/child/simple_webmimeregistry_impl.cc b/content/child/simple_webmimeregistry_impl.cc
index e7416d92041d5443c2cd4782704a549fa4fbb99e..fda30d3794b720e6c6c8cb26e1e747f5caee2407 100644
--- a/content/child/simple_webmimeregistry_impl.cc
+++ b/content/child/simple_webmimeregistry_impl.cc
@@ -35,6 +35,16 @@ WebMimeRegistry::SupportsType SimpleWebMimeRegistryImpl::supportsImageMIMEType(
 }
 
 WebMimeRegistry::SupportsType
+    SimpleWebMimeRegistryImpl::supportsImagePrefixedMIMEType(
+    const WebString& mime_type) {
+    std::string ascii_mime_type = ToASCIIOrEmpty(mime_type);
+  return (net::IsSupportedImageMimeType(ascii_mime_type)
+          || (ascii_mime_type.substr(0, 6) == "image/"

[jam, 2014/08/25 18:01:15]

nit: put the '||' in the previous line

also use StartsWithASCII instead of .substr(0,6)

+              && net::IsSupportedNonImageMimeType(ascii_mime_type))) ?

[jam, 2014/08/25 18:01:15]

&& in previous line

+      WebMimeRegistry::IsSupported : WebMimeRegistry::IsNotSupported;
+}
+
+WebMimeRegistry::SupportsType
     SimpleWebMimeRegistryImpl::supportsJavaScriptMIMEType(
     const WebString& mime_type) {
   return net::IsSupportedJavascriptMimeType(ToASCIIOrEmpty(mime_type)) ?