Make default media device ID salts random by default

blimp/engine/common/blimp_browser_context.cc

Index: blimp/engine/common/blimp_browser_context.cc
diff --git a/blimp/engine/common/blimp_browser_context.cc b/blimp/engine/common/blimp_browser_context.cc
index 9c86399cb577949889bed1405a2e8c68edd37ecc..40ff7f70fbcb535e4965a8320b6377411898afdc 100644
--- a/blimp/engine/common/blimp_browser_context.cc
+++ b/blimp/engine/common/blimp_browser_context.cc
@@ -4,6 +4,8 @@
 
 #include "blimp/engine/common/blimp_browser_context.h"
 
+#include <string>
+
 #include "base/bind.h"
 #include "base/environment.h"
 #include "base/files/file_util.h"
@@ -34,7 +36,8 @@ namespace engine {
 // Contains URLRequestContextGetter required for resource loading.
 class BlimpResourceContext : public content::ResourceContext {
  public:
-  BlimpResourceContext() {}
+  BlimpResourceContext()
+      : media_device_id_salt_(CreateRandomMediaDeviceIDSalt()) {}
   ~BlimpResourceContext() override {}
 
   void set_url_request_context_getter(
@@ -50,9 +53,11 @@ class BlimpResourceContext : public content::ResourceContext {
   // content::ResourceContext implementation.
   net::HostResolver* GetHostResolver() override;
   net::URLRequestContext* GetRequestContext() override;
+  SaltCallback GetMediaDeviceIDSalt() override;
 
  private:
   scoped_refptr<BlimpURLRequestContextGetter> getter_;
+  std::string media_device_id_salt_;

[tommi (sloooow) - chröme, 2016/05/17 12:27:20]

const?

[Guido Urdaneta, 2016/05/18 09:40:19]

Done.

 
   DISALLOW_COPY_AND_ASSIGN(BlimpResourceContext);
 };
@@ -65,6 +70,11 @@ net::URLRequestContext* BlimpResourceContext::GetRequestContext() {
   return getter_->GetURLRequestContext();
 }
 
+content::ResourceContext::SaltCallback
+BlimpResourceContext::GetMediaDeviceIDSalt() {
+  return CreateSaltCallback(media_device_id_salt_);
+}
+
 BlimpBrowserContext::BlimpBrowserContext(bool off_the_record,
                                          net::NetLog* net_log)
     : resource_context_(new BlimpResourceContext),