Align base::hash_map with C++11, part 1.

content/public/browser/browser_context.h

Index: content/public/browser/browser_context.h
diff --git a/content/public/browser/browser_context.h b/content/public/browser/browser_context.h
index 25190a6f8618330620b47c1943db036a300c6b22..0e9bc189afe238d4a5101476b9739bb2b480ce4a 100644
--- a/content/public/browser/browser_context.h
+++ b/content/public/browser/browser_context.h
@@ -168,17 +168,4 @@ class CONTENT_EXPORT BrowserContext : public base::SupportsUserData {
 
 }  // namespace content
 
-#if defined(COMPILER_GCC)
-namespace BASE_HASH_NAMESPACE {
-
-template<>
-struct hash<content::BrowserContext*> {
-  std::size_t operator()(content::BrowserContext* const& p) const {
-    return reinterpret_cast<std::size_t>(p);
-  }
-};
-
-}  // namespace BASE_HASH_NAMESPACE
-#endif
-
 #endif  // CONTENT_PUBLIC_BROWSER_BROWSER_CONTEXT_H_