Migrate components/data_reduction_proxy to Mojo interfaces.

chrome/common/chrome_content_client.h

Index: chrome/common/chrome_content_client.h
diff --git a/chrome/common/chrome_content_client.h b/chrome/common/chrome_content_client.h
index 819c255801f06fcf1608ed4e8048698c9c928613..621dd141d88078c3ce51dbcd6ee9d9dabc8d379e 100644
--- a/chrome/common/chrome_content_client.h
+++ b/chrome/common/chrome_content_client.h
@@ -65,7 +65,6 @@ class ChromeContentClient : public content::ContentClient {
   void AddAdditionalSchemes(std::vector<url::SchemeWithType>* standard_schemes,
                             std::vector<url::SchemeWithType>* referrer_schemes,
                             std::vector<std::string>* saveable_shemes) override;
-  bool CanSendWhileSwappedOut(const IPC::Message* message) override;
   std::string GetProduct() const override;
   std::string GetUserAgent() const override;
   base::string16 GetLocalizedString(int message_id) const override;