[base] Replace Contains{Key,Value} with Contains in //chrome/browser/extensions

This change replaces usages of base::ContainsKey() and base::ContainsValue()
with base::Contains() in //chrome/browser/extensions.

Reproduction:
 - sed -i 's/\bbase::ContainsKey\b/base::Contains/g'
 - sed -i 's/\bbase::ContainsValue\b/base::Contains/g'
 - git cl format

This CL was uploaded by git cl split.

[email protected], [email protected]

Bug: 970209
Change-Id: I28d4610192d74393f6ccf8e8d5707ecb6cb8000d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1648246
Auto-Submit: Jan Wilken Dörrie <[email protected]>
Reviewed-by: Karan Bhatia <[email protected]>
Commit-Queue: Karan Bhatia <[email protected]>
Cr-Commit-Position: refs/heads/master@{#666812}
diff --git a/chrome/browser/extensions/external_install_manager.cc b/chrome/browser/extensions/external_install_manager.cc
index 81e6ad6..8f1547c 100644
--- a/chrome/browser/extensions/external_install_manager.cc
+++ b/chrome/browser/extensions/external_install_manager.cc
@@ -95,7 +95,7 @@
 void ExternalInstallManager::AddExternalInstallError(const Extension* extension,
                                                      bool is_new_profile) {
   // Error already exists or has been previously shown.
-  if (base::ContainsKey(errors_, extension->id()) ||
+  if (base::Contains(errors_, extension->id()) ||
       shown_ids_.count(extension->id()) > 0)
     return;
 
@@ -143,7 +143,7 @@
   // The list of ids can be mutated during this loop, so make a copy.
   const std::set<ExtensionId> ids_copy = unacknowledged_ids_;
   for (const auto& id : ids_copy) {
-    if (base::ContainsKey(errors_, id) || shown_ids_.count(id) > 0)
+    if (base::Contains(errors_, id) || shown_ids_.count(id) > 0)
       continue;
 
     // Ignore the blocked and disabled extensions. They will be put into
@@ -277,7 +277,7 @@
       // not sent out if the extension is disabled (which it is here).
       const std::string& extension_id =
           content::Details<const Extension>(details).ptr()->id();
-      if (base::ContainsKey(errors_, extension_id))
+      if (base::Contains(errors_, extension_id))
         RemoveExternalInstallError(extension_id);
       break;
     }