Add CefRegisterWidevineCdm function and remove component updater support (issue #2009)

Mac: Check in widevinecdmadapter.plugin binary until Widevine GN build errors are resolved (https://crbug.com/626436).

tests/cefclient/browser/drm_test.cc

@@ -0,0 +1,120 @@
+// Copyright (c) 2016 The Chromium Embedded Framework 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 "cefclient/browser/drm_test.h"
+
+#include <algorithm>
+#include <string>
+
+#include "include/cef_parser.h"
+#include "include/cef_web_plugin.h"
+
+namespace client {
+namespace drm_test {
+
+namespace {
+
+// Application-specific error codes.
+const int kMessageFormatError = 1;
+const int kCdmLoadError = 2;
+
+const char kTestUrl[] = "http://tests/drm";
+const char kWidevineCdmPathKey[] = "widevine_cdm_path";
+
+// Callback executed once CDM registration is complete.
+class CdmCallback : public CefRegisterCdmCallback {
+ public:
+  CdmCallback(CefRefPtr<CefMessageRouterBrowserSide::Callback> callback)
+    : callback_(callback) {
+  }
+
+  void OnCdmRegistrationComplete(cef_cdm_registration_error_t result,
+                                 const CefString& error_message) OVERRIDE {
+    if (result == CEF_CDM_REGISTRATION_ERROR_NONE)
+      callback_->Success("");
+    else
+      callback_->Failure(kCdmLoadError, error_message);
+    callback_ = nullptr;
+  }
+
+ private:
+  CefRefPtr<CefMessageRouterBrowserSide::Callback> callback_;
+
+  IMPLEMENT_REFCOUNTING(CdmCallback);
+  DISALLOW_COPY_AND_ASSIGN(CdmCallback);
+};
+
+// Handle messages in the browser process.
+class Handler : public CefMessageRouterBrowserSide::Handler {
+ public:
+  Handler() {}
+
+  // Called due to cefQuery execution in binding.html.
+  virtual bool OnQuery(CefRefPtr<CefBrowser> browser,
+                       CefRefPtr<CefFrame> frame,
+                       int64 query_id,
+                       const CefString& request,
+                       bool persistent,
+                       CefRefPtr<Callback> callback) OVERRIDE {
+    // Only handle messages from the test URL.
+    const std::string& url = frame->GetURL();
+    if (url.find(kTestUrl) != 0)
+      return false;
+
+    // Parse |request| as a JSON dictionary.
+    CefRefPtr<CefDictionaryValue> request_dict = ParseJSON(request);
+    if (!request_dict) {
+      callback->Failure(kMessageFormatError, "Incorrect message format");
+      return true;
+    }
+
+    // Verify the "widevine_cdm_path" key.
+    if (!VerifyKey(request_dict, kWidevineCdmPathKey, VTYPE_STRING, callback))
+      return true;
+
+    const std::string& widevine_cdm_path =
+        request_dict->GetString(kWidevineCdmPathKey);
+    if (widevine_cdm_path.empty()) {
+      callback->Failure(kMessageFormatError, "Empty widevine CDM path");
+      return true;
+    }
+
+    // Register the Widvine CDM.
+    CefRegisterWidevineCdm(widevine_cdm_path, new CdmCallback(callback));
+    return true;
+  }
+
+ private:
+  // Convert a JSON string to a dictionary value.
+  static CefRefPtr<CefDictionaryValue> ParseJSON(const CefString& string) {
+    CefRefPtr<CefValue> value = CefParseJSON(string, JSON_PARSER_RFC);
+    if (value.get() && value->GetType() == VTYPE_DICTIONARY)
+      return value->GetDictionary();
+    return NULL;
+  }
+
+  // Verify that |key| exists in |dictionary| and has type |value_type|. Fails
+  // |callback| and returns false on failure.
+  static bool VerifyKey(CefRefPtr<CefDictionaryValue> dictionary,
+                        const char* key,
+                        cef_value_type_t value_type,
+                        CefRefPtr<Callback> callback) {
+    if (!dictionary->HasKey(key) || dictionary->GetType(key) != value_type) {
+      callback->Failure(kMessageFormatError,
+                        "Missing or incorrectly formatted message key: " +
+                        std::string(key));
+      return false;
+    }
+    return true;
+  }
+};
+
+}  // namespace
+
+void CreateMessageHandlers(test_runner::MessageHandlerSet& handlers) {
+  handlers.insert(new Handler());
+}
+
+}  // namespace drm_test
+}  // namespace client