Implement clipboardRead/Write content capabilities

extensions/renderer/script_context.cc

Index: extensions/renderer/script_context.cc
diff --git a/extensions/renderer/script_context.cc b/extensions/renderer/script_context.cc
index 6a7629e300b6f88a322651fa459a815c7cae6eac..53193597e8dec2f2c9631182046e88fc6c95a36f 100644
--- a/extensions/renderer/script_context.cc
+++ b/extensions/renderer/script_context.cc
@@ -17,6 +17,7 @@
 #include "extensions/common/extension_api.h"
 #include "extensions/common/extension_urls.h"
 #include "extensions/common/features/base_feature_provider.h"
+#include "extensions/common/permissions/permissions_data.h"
 #include "gin/per_context_data.h"
 #include "third_party/WebKit/public/web/WebDataSource.h"
 #include "third_party/WebKit/public/web/WebDocument.h"
@@ -273,4 +274,24 @@ gin::ContextHolder* ScriptContext::GetContextHolder() {
   return gin::PerContextData::From(v8_context())->context_holder();
 }
 
+void ScriptContext::SetContentCapabilities(
+    const APIPermissionSet& permissions) {
+  content_capabilities_ = permissions;
+}
+
+bool ScriptContext::HasContentCapability(APIPermission::ID permission) const {
+  if (context_type() != Feature::WEB_PAGE_CONTEXT)
+    // Only web page contexts may be granted content capabilities. Other
+    // contexts are either privileged WebUI or extensions with their own set of
+    // permissions.
+    return false;

[not at google - send to devlin, 2014/12/10 22:11:34]

I would prefer if you surround this comment+body in curlies. It's many lines.

+  if (content_capabilities_.find(permission) != content_capabilities_.end())
+    return true;
+  if (effective_extension_.get()) {
+    return effective_extension_->permissions_data()->HasAPIPermission(
+        permission);
+  }
+  return false;
+}
+
 }  // namespace extensions