Base: Rename File::error() to File::error_details()

base/files/file.h

Index: base/files/file.h
diff --git a/base/files/file.h b/base/files/file.h
index e87dd7b918f690c7770ff6650b434f6f766ae33c..a8cb16cb45722aa14523a1e28d74e85f2f61c238 100644
--- a/base/files/file.h
+++ b/base/files/file.h
@@ -172,7 +172,7 @@ class BASE_EXPORT File {
   bool created() const { return created_; }
 
   // Returns the OS result of opening this file.
-  Error error() const { return error_; }
+  Error error_details() const { return error_details_; }
 
   PlatformFile GetPlatformFile() const { return file_; }
   PlatformFile TakePlatformFile();
@@ -276,7 +276,7 @@ class BASE_EXPORT File {
   PlatformFile file_;
 #endif
 
-  Error error_;
+  Error error_details_;
   bool created_;
   bool async_;
 };