safe_browsing OWNERS refactor

This CL makes a couple changes to the OWNERS files for safe_browsing
code.
- Most OWNERS files now point to components/safe_browsing/OWNERS,
  for easier addition/removal of users.
- Removed redundant OWNERS file
  chrome/browser/safe_browsing/download_protection/OWNERS
- Removed reference to non-existent file
  components/safe_browsing/content/password_protection/OWNERS
- Removed BUILD.gn special case in chrome/common/safe_browsing/OWNERS
  so that BUILD.gn changes to our code still get reviewed.

Change-Id: If567a56ec3955810b0293fbfa1665b15d45875ca
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3826746
Reviewed-by: Varun Khaneja <vakh@chromium.org>
Commit-Queue: Daniel Rubery <drubery@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1034157}

chrome/browser/resources/safe_browsing/OWNERS

@@ -1,3 +1 @@
-drubery@chromium.org
-nparker@chromium.org
-vakh@chromium.org
+file://components/safe_browsing/OWNERS

chrome/browser/safe_browsing/OWNERS

@@ -1,6 +1 @@
-drubery@chromium.org
-nparker@chromium.org
-vakh@chromium.org
-xinghuilu@chromium.org
-
-per-file *password_protection*=file://components/safe_browsing/content/password_protection/OWNERS
+file://components/safe_browsing/OWNERS

chrome/browser/ui/views/safe_browsing/OWNERS

@@ -1,3 +1 @@
-drubery@chromium.org
-nparker@chromium.org
-vakh@chromium.org
+file://components/safe_browsing/OWNERS

chrome/browser/ui/webui/reset_password/OWNERS

@@ -1,6 +1,4 @@
 per-file *.mojom=set noparent
 per-file *.mojom=file://ipc/SECURITY_OWNERS
 
-drubery@chromium.org
-nparker@chromium.org
-vakh@chromium.org
+file://components/safe_browsing/OWNERS

chrome/common/safe_browsing/OWNERS

@@ -1,10 +1,4 @@
-drubery@chromium.org
-nparker@chromium.org
-vakh@chromium.org
-
-# This is for the common case of adding or renaming files. If you're doing
-# structural changes, use usual OWNERS rules.
-per-file BUILD.gn=*
+file://components/safe_browsing/OWNERS
 
 per-file *_messages*.h=set noparent
 per-file *_messages*.h=file://ipc/SECURITY_OWNERS

chrome/renderer/safe_browsing/OWNERS

@@ -1,3 +1 @@
-drubery@chromium.org
-nparker@chromium.org
-vakh@chromium.org
+file://components/safe_browsing/OWNERS

chrome/utility/safe_browsing/OWNERS

@@ -1,3 +1 @@
-drubery@chromium.org
-nparker@chromium.org
-vakh@chromium.org
+file://components/safe_browsing/OWNERS

components/resources/protobufs/OWNERS

@@ -1,4 +1,3 @@
-drubery@chromium.org
+file://components/safe_browsing/OWNERS
+
 meacer@chromium.org
-nparker@chromium.org
-vakh@chromium.org