Add plugin placeholder and policy support (issue #1708)

- Default plugin loading policy can be specified using the new
  `--plugin-policy=[allow|block|detect]` command-line flag.
- Move CefRequestHandler::OnBeforePluginLoad to
  CefRequestContextHandler and add a new policy argument that
  supports different actions (allow, block, detect, disable) on a
  per-plugin-instance basis.
- Add CefContextMenuHandler::RunContextMenu for providing a custom
  context menu implementation.
- Add CefResourceBundleHandler::GetDataResourceForScale for
  returning scaled resources (issue #1272).
- Add CefResourceBundle for retrieving resources from the resource
  bundle (*.pak) files loaded by CEF during startup or via the
  CefResourceBundleHandler.
- Linux: Fix Debug build IO access warning with CefGetMimeType.
- cef_unittests: Move the refcounting implementation from TestHandler
  to subclasses in order to support interface inheritance from
  subclasses.

libcef_dll/cpptoc/resource_bundle_cpptoc.cc

@@ -0,0 +1,153 @@
+// Copyright (c) 2015 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.
+//
+// ---------------------------------------------------------------------------
+//
+// This file was generated by the CEF translator tool. If making changes by
+// hand only do so within the body of existing method and function
+// implementations. See the translator.README.txt file in the tools directory
+// for more information.
+//
+
+#include "libcef_dll/cpptoc/resource_bundle_cpptoc.h"
+
+
+// GLOBAL FUNCTIONS - Body may be edited by hand.
+
+CEF_EXPORT cef_resource_bundle_t* cef_resource_bundle_get_global() {
+  // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
+
+  // Execute
+  CefRefPtr<CefResourceBundle> _retval = CefResourceBundle::GetGlobal();
+
+  // Return type: refptr_same
+  return CefResourceBundleCppToC::Wrap(_retval);
+}
+
+
+namespace {
+
+// MEMBER FUNCTIONS - Body may be edited by hand.
+
+cef_string_userfree_t CEF_CALLBACK resource_bundle_get_localized_string(
+    struct _cef_resource_bundle_t* self, int string_id) {
+  // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
+
+  DCHECK(self);
+  if (!self)
+    return NULL;
+
+  // Execute
+  CefString _retval = CefResourceBundleCppToC::Get(self)->GetLocalizedString(
+      string_id);
+
+  // Return type: string
+  return _retval.DetachToUserFree();
+}
+
+int CEF_CALLBACK resource_bundle_get_data_resource(
+    struct _cef_resource_bundle_t* self, int resource_id, void** data,
+    size_t* data_size) {
+  // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
+
+  DCHECK(self);
+  if (!self)
+    return 0;
+  // Verify param: data; type: simple_byref
+  DCHECK(data);
+  if (!data)
+    return 0;
+  // Verify param: data_size; type: simple_byref
+  DCHECK(data_size);
+  if (!data_size)
+    return 0;
+
+  // Translate param: data; type: simple_byref
+  void* dataVal = data?*data:NULL;
+  // Translate param: data_size; type: simple_byref
+  size_t data_sizeVal = data_size?*data_size:0;
+
+  // Execute
+  bool _retval = CefResourceBundleCppToC::Get(self)->GetDataResource(
+      resource_id,
+      dataVal,
+      data_sizeVal);
+
+  // Restore param: data; type: simple_byref
+  if (data)
+    *data = dataVal;
+  // Restore param: data_size; type: simple_byref
+  if (data_size)
+    *data_size = data_sizeVal;
+
+  // Return type: bool
+  return _retval;
+}
+
+int CEF_CALLBACK resource_bundle_get_data_resource_for_scale(
+    struct _cef_resource_bundle_t* self, int resource_id,
+    cef_scale_factor_t scale_factor, void** data, size_t* data_size) {
+  // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
+
+  DCHECK(self);
+  if (!self)
+    return 0;
+  // Verify param: data; type: simple_byref
+  DCHECK(data);
+  if (!data)
+    return 0;
+  // Verify param: data_size; type: simple_byref
+  DCHECK(data_size);
+  if (!data_size)
+    return 0;
+
+  // Translate param: data; type: simple_byref
+  void* dataVal = data?*data:NULL;
+  // Translate param: data_size; type: simple_byref
+  size_t data_sizeVal = data_size?*data_size:0;
+
+  // Execute
+  bool _retval = CefResourceBundleCppToC::Get(self)->GetDataResourceForScale(
+      resource_id,
+      scale_factor,
+      dataVal,
+      data_sizeVal);
+
+  // Restore param: data; type: simple_byref
+  if (data)
+    *data = dataVal;
+  // Restore param: data_size; type: simple_byref
+  if (data_size)
+    *data_size = data_sizeVal;
+
+  // Return type: bool
+  return _retval;
+}
+
+}  // namespace
+
+
+// CONSTRUCTOR - Do not edit by hand.
+
+CefResourceBundleCppToC::CefResourceBundleCppToC() {
+  GetStruct()->get_localized_string = resource_bundle_get_localized_string;
+  GetStruct()->get_data_resource = resource_bundle_get_data_resource;
+  GetStruct()->get_data_resource_for_scale =
+      resource_bundle_get_data_resource_for_scale;
+}
+
+template<> CefRefPtr<CefResourceBundle> CefCppToC<CefResourceBundleCppToC,
+    CefResourceBundle, cef_resource_bundle_t>::UnwrapDerived(
+    CefWrapperType type, cef_resource_bundle_t* s) {
+  NOTREACHED() << "Unexpected class type: " << type;
+  return NULL;
+}
+
+#ifndef NDEBUG
+template<> base::AtomicRefCount CefCppToC<CefResourceBundleCppToC,
+    CefResourceBundle, cef_resource_bundle_t>::DebugObjCt = 0;
+#endif
+
+template<> CefWrapperType CefCppToC<CefResourceBundleCppToC, CefResourceBundle,
+    cef_resource_bundle_t>::kWrapperType = WT_RESOURCE_BUNDLE;