Move SearchProvider implementation into Blink and make it a no-op.

third_party/WebKit/Source/core/frame/External.idl

Index: third_party/WebKit/Source/core/frame/External.idl
diff --git a/components/cast_certificate/cast_crl_root_ca_cert_der-inc.h b/third_party/WebKit/Source/core/frame/External.idl
similarity index 61%
copy from components/cast_certificate/cast_crl_root_ca_cert_der-inc.h
copy to third_party/WebKit/Source/core/frame/External.idl
index 5463d19a646f2535b6c1046d3210172eb5a57422..977e4e005d6d68ba041e878014630ea3567b5423 100644
--- a/components/cast_certificate/cast_crl_root_ca_cert_der-inc.h
+++ b/third_party/WebKit/Source/core/frame/External.idl
@@ -2,7 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// TODO(ryanchung): Add Cast CRL Root here.
-const unsigned char kCastCRLRootCaDer[] = {
-    0x30,
+[NoInterfaceObject]
+interface External {
+  void AddSearchProvider();
+  void IsSearchProviderInstalled();

[jam, 2016/07/26 17:04:55]

this has an integer return value per the spec.

edge returns 2 always after the depreciation, see the link in the blink-dev
thread where they said that after a long discussion they decided on this value
(i.e. search is set) so that websites don't spam users to change the default

[jam, 2016/07/26 17:09:23]

oh actually nvm, i see from your intent email that the spec says no return
value.

[dcheng, 2016/07/27 00:18:38]

Yeah, let me talk to domenic and see if he has any thoughts on this.

 };