Split SchemaGeneratedBindings up into smaller, more targetted native handlers.

chrome/renderer/extensions/api_definitions_natives.cc

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/renderer/extensions/api_definitions_natives.h"
+
+#include "chrome/common/extensions/api/extension_api.h"
+#include "chrome/renderer/extensions/user_script_slave.h"
+
+namespace extensions {
+
+ApiDefinitionsNatives::ApiDefinitionsNatives(
+    ExtensionDispatcher* extension_dispatcher)
+    : ChromeV8Extension(extension_dispatcher) {
+  RouteFunction("GetExtensionAPIDefinition",
+                base::Bind(&ApiDefinitionsNatives::GetExtensionAPIDefinition,
+                           base::Unretained(this)));
+}
+
+v8::Handle<v8::Value> ApiDefinitionsNatives::GetExtensionAPIDefinition(
+    const v8::Arguments& args) {
+  ChromeV8Context* v8_context =
+      extension_dispatcher()->v8_context_set().GetCurrent();
+  CHECK(v8_context);
+
+  // TODO(kalman): This is being calculated twice, first in
+  // ExtensionDispatcher then again here. It might as well be a property of
+  // ChromeV8Context, however, this would require making ChromeV8Context take
+  // an Extension rather than an extension ID.  In itself this is fine,
+  // however it does not play correctly with the "IsTestExtensionId" checks.
+  // We need to remove that first.
+  scoped_ptr<std::set<std::string> > apis;
+
+  const std::string& extension_id = v8_context->extension_id();
+  if (extension_dispatcher()->IsTestExtensionId(extension_id)) {
+    apis.reset(new std::set<std::string>());
+    // The minimal set of APIs that tests need.
+    apis->insert("extension");
+  } else {
+    apis = ExtensionAPI::GetSharedInstance()->GetAPIsForContext(
+        v8_context->context_type(),
+        extension_dispatcher()->extensions()->GetByID(extension_id),
+        UserScriptSlave::GetDataSourceURLForFrame(v8_context->web_frame()));
+  }
+
+  return extension_dispatcher()->v8_schema_registry()->GetSchemas(*apis);
+}
+
+}  // namespace extensions