Simplify BrowserContext by removing redundant methods.

blimp/engine/common/blimp_browser_context.h

Index: blimp/engine/common/blimp_browser_context.h
diff --git a/blimp/engine/common/blimp_browser_context.h b/blimp/engine/common/blimp_browser_context.h
index b1bfc2c36e54070b0f39ff3426f5e82d74bcb0cf..5902f665b73cfa7cf6cb09dba7b07306342977c0 100644
--- a/blimp/engine/common/blimp_browser_context.h
+++ b/blimp/engine/common/blimp_browser_context.h
@@ -37,7 +37,6 @@ class BlimpBrowserContext : public content::BrowserContext {
       const base::FilePath& partition_path) override;
   base::FilePath GetPath() const override;
   bool IsOffTheRecord() const override;
-  net::URLRequestContextGetter* GetRequestContext() override;
   net::URLRequestContextGetter* GetMediaRequestContext() override;
   net::URLRequestContextGetter* GetMediaRequestContextForRenderProcess(
       int renderer_child_id) override;