Geolocation: extract ContentBrowserClient methods specific to Geolocation into a class

blimp/engine/app/blimp_content_browser_client.cc

Index: blimp/engine/app/blimp_content_browser_client.cc
diff --git a/blimp/engine/app/blimp_content_browser_client.cc b/blimp/engine/app/blimp_content_browser_client.cc
index 196006aff1506f73d4cff6c81123130ee596b650..5e9917800b822efbc28bed8a10cdb4400decfe6e 100644
--- a/blimp/engine/app/blimp_content_browser_client.cc
+++ b/blimp/engine/app/blimp_content_browser_client.cc
@@ -11,6 +11,22 @@
 namespace blimp {
 namespace engine {
 
+namespace {
+// A provider of services needed by Geolocation.
+class BlimpGeolocationServiceOverrides
+    : public content::GeolocationProvider::ServiceOverrides {
+ public:
+  bool UseNetworkLocationProviders() override { return false; }
+
+  content::LocationProvider* OverrideSystemLocationProvider() {
+    if (!location_provider_)
+      location_provider_ = base::WrapUnique(new BlimpLocationProvider());
+    return location_provider_.get();
+  }
+};
+
+}  // anonymous namespace
+
 BlimpContentBrowserClient::BlimpContentBrowserClient() {}
 
 BlimpContentBrowserClient::~BlimpContentBrowserClient() {}
@@ -39,16 +55,9 @@ BlimpBrowserContext* BlimpContentBrowserClient::GetBrowserContext() {
   return blimp_browser_main_parts_->GetBrowserContext();
 }
 
-content::LocationProvider*
-BlimpContentBrowserClient::OverrideSystemLocationProvider() {
-  if (!location_provider_) {
-    location_provider_ = base::WrapUnique(new BlimpLocationProvider());
-  }
-  return location_provider_.get();
-}
-
-bool BlimpContentBrowserClient::UseNetworkLocationProviders() {
-  return false;
+content::GeolocationProvider::ServiceOverrides*
+  ChromeContentBrowserClient::GetGeolocationServiceOverrides() {
+  return new BlimpGeolocationServiceOverrides();
 }
 
 void BlimpContentBrowserClient::RegisterRenderProcessMojoServices(