Geolocation: extract ContentBrowserClient methods specific to Geolocation into a class

blimp/engine/app/blimp_content_browser_client.h

Index: blimp/engine/app/blimp_content_browser_client.h
diff --git a/blimp/engine/app/blimp_content_browser_client.h b/blimp/engine/app/blimp_content_browser_client.h
index 8d02198ee58caa3eab3bbda88d3cc7d8afaadf2f..9d2e56d847b27b92bd28b0684b08b4e17aa9ef29 100644
--- a/blimp/engine/app/blimp_content_browser_client.h
+++ b/blimp/engine/app/blimp_content_browser_client.h
@@ -6,7 +6,6 @@
 #define BLIMP_ENGINE_APP_BLIMP_CONTENT_BROWSER_CLIENT_H_
 
 #include "base/macros.h"
-#include "blimp/engine/feature/geolocation/blimp_location_provider.h"
 #include "content/public/browser/content_browser_client.h"
 
 namespace blimp {
@@ -33,8 +32,7 @@ class BlimpContentBrowserClient : public content::ContentBrowserClient {
       shell::InterfaceRegistry* registry,
       content::RenderProcessHost* render_process_host) override;
 
-  content::LocationProvider* OverrideSystemLocationProvider() override;
-  bool UseNetworkLocationProviders() override;
+  content::GeolocationProvider::Delegate* CreateGeolocationDelegate() override;
 
   BlimpBrowserContext* GetBrowserContext();
 
@@ -42,8 +40,6 @@ class BlimpContentBrowserClient : public content::ContentBrowserClient {
   // Owned by BrowserMainLoop
   BlimpBrowserMainParts* blimp_browser_main_parts_ = nullptr;
 
-  std::unique_ptr<BlimpLocationProvider> location_provider_;
-
   DISALLOW_COPY_AND_ASSIGN(BlimpContentBrowserClient);
 };