Adding an IO Data and keyed service to previews/

chrome/browser/profiles/profile_io_data.h

Index: chrome/browser/profiles/profile_io_data.h
diff --git a/chrome/browser/profiles/profile_io_data.h b/chrome/browser/profiles/profile_io_data.h
index f373eaa0acd0d871917a087d077e67e6676fa8e5..32312abf4781300a1f842e307d44db7e2cc068f6 100644
--- a/chrome/browser/profiles/profile_io_data.h
+++ b/chrome/browser/profiles/profile_io_data.h
@@ -88,20 +88,24 @@ class TransportSecurityPersister;
 class TransportSecurityState;
 class URLRequestJobFactoryImpl;
 }  // namespace net
 
 namespace policy {
 class PolicyCertVerifier;
 class PolicyHeaderIOHelper;
 class URLBlacklistManager;
 }  // namespace policy
 
+namespace previews {
+class PreviewsIOData;
+}
+
 // Conceptually speaking, the ProfileIOData represents data that lives on the IO
 // thread that is owned by a Profile, such as, but not limited to, network
 // objects like CookieMonster, HttpTransactionFactory, etc.  Profile owns
 // ProfileIOData, but will make sure to delete it on the IO thread (except
 // possibly in unit tests where there is no IO thread).
 class ProfileIOData {
  public:
   typedef std::vector<scoped_refptr<ChromeURLRequestContextGetter>>
       ChromeURLRequestContextGetterVector;
 
@@ -246,20 +250,24 @@ class ProfileIOData {
     client_cert_store_factory_ = factory;
   }
 
   bool IsDataReductionProxyEnabled() const;
 
   data_reduction_proxy::DataReductionProxyIOData*
   data_reduction_proxy_io_data() const {
     return data_reduction_proxy_io_data_.get();
   }
 
+  previews::PreviewsIOData* previews_io_data() const {
+    return previews_io_data_.get();
+  }
+
   // This function is to be used to check if the |url| is defined in
   // blacklist or whitelist policy.
   virtual policy::URLBlacklist::URLBlacklistState GetURLBlacklistState(
       const GURL& url) const;
 
   // Returns the predictor service for this Profile. Returns nullptr if there is
   // no Predictor, as is the case with OffTheRecord profiles.
   virtual chrome_browser_net::Predictor* GetPredictor();
 
   // Get platform ClientCertStore. May return nullptr.
@@ -382,20 +390,23 @@ class ProfileIOData {
   // ProfileIOData, and the derived class calls this method to set the
   // channel_id_service_ member and transfers ownership to the base
   // class.
   void set_channel_id_service(
       net::ChannelIDService* channel_id_service) const;
 
   void set_data_reduction_proxy_io_data(
       std::unique_ptr<data_reduction_proxy::DataReductionProxyIOData>
           data_reduction_proxy_io_data) const;
 
+  void set_previews_io_data(
+      std::unique_ptr<previews::PreviewsIOData> previews_io_data) const;
+
   net::ProxyService* proxy_service() const {
     return proxy_service_.get();
   }
 
   net::HttpServerProperties* http_server_properties() const;
 
   void set_http_server_properties(
       std::unique_ptr<net::HttpServerProperties> http_server_properties) const;
 
   net::URLRequestContext* main_request_context() const {
@@ -559,20 +570,22 @@ class ProfileIOData {
 
   // Pointed to by URLRequestContext.
 #if defined(ENABLE_EXTENSIONS)
   mutable scoped_refptr<extensions::InfoMap> extension_info_map_;
 #endif
   mutable std::unique_ptr<net::ChannelIDService> channel_id_service_;
 
   mutable std::unique_ptr<data_reduction_proxy::DataReductionProxyIOData>
       data_reduction_proxy_io_data_;
 
+  mutable std::unique_ptr<previews::PreviewsIOData> previews_io_data_;
+
   mutable std::unique_ptr<net::ProxyService> proxy_service_;
   mutable std::unique_ptr<net::TransportSecurityState>
       transport_security_state_;
   mutable std::unique_ptr<net::CTVerifier> cert_transparency_verifier_;
   mutable std::unique_ptr<ChromeExpectCTReporter> expect_ct_reporter_;
   mutable std::unique_ptr<net::HttpServerProperties> http_server_properties_;
 #if defined(OS_CHROMEOS)
   // Set to |cert_verifier_| if it references a PolicyCertVerifier. In that
   // case, the verifier is owned by  |cert_verifier_|. Otherwise, set to NULL.
   mutable std::unique_ptr<net::CertVerifier> cert_verifier_;