Move <webview> API to chrome layer

chrome/renderer/browser_plugin/chrome_webview_bindings.cc

+// Copyright (c) 2013 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/browser_plugin/chrome_browser_plugin_observer.h"
+#include "chrome/renderer/browser_plugin/chrome_webview_bindings.h"
+#include "chrome/renderer/browser_plugin/chrome_webview_constants.h"
+
+namespace chrome {
+
+namespace {
+
+int Int32FromNPVariant(const NPVariant& variant) {
+  if (NPVARIANT_IS_INT32(variant))
+    return NPVARIANT_TO_INT32(variant);
+
+  if (NPVARIANT_IS_DOUBLE(variant))
+    return NPVARIANT_TO_DOUBLE(variant);
+
+  return 0;
+}
+
+}  //  namespace
+
+WebViewMethodBinding::WebViewMethodBinding(
+    ChromeBrowserPluginObserver* browser_plugin_observer,
+    const char name[],
+    uint32 arg_count)
+    : browser_plugin_observer_(browser_plugin_observer),
+      name_(name),
+      arg_count_(arg_count) {
+}
+
+WebViewMethodBinding::~WebViewMethodBinding() {
+}
+
+const std::string& WebViewMethodBinding::GetName() const {
+  return name_;
+}
+
+uint32 WebViewMethodBinding::GetArgCount() const {
+  return arg_count_;
+}
+
+//------------------------------------------------------------------------------
+
+WebViewPropertyBinding::WebViewPropertyBinding(const char name[])
+    : name_(name) {
+}
+
+WebViewPropertyBinding::~WebViewPropertyBinding() {
+}
+
+const std::string& WebViewPropertyBinding::GetName() const {
+  return name_;
+}
+
+//------------------------------------------------------------------------------
+
+WebViewMethodBindingBack::WebViewMethodBindingBack(
+    ChromeBrowserPluginObserver* browser_plugin_observer)
+    : WebViewMethodBinding(browser_plugin_observer, webview::kMethodBack, 0) {
+}
+
+WebViewMethodBindingBack::~WebViewMethodBindingBack() {
+}
+
+bool WebViewMethodBindingBack::Invoke(const NPVariant* args,
+                                      NPVariant* result) {
+  browser_plugin_observer()->Go(-1);
+  return true;
+}
+
+//------------------------------------------------------------------------------
+
+WebViewMethodBindingForward::WebViewMethodBindingForward(
+    ChromeBrowserPluginObserver* browser_plugin_observer)
+    : WebViewMethodBinding(browser_plugin_observer,
+                           webview::kMethodForward, 0) {
+}
+
+WebViewMethodBindingForward::~WebViewMethodBindingForward() {
+}
+
+bool WebViewMethodBindingForward::Invoke(const NPVariant* args,
+                                         NPVariant* result) {
+  browser_plugin_observer()->Go(1);
+  return true;
+}
+
+//------------------------------------------------------------------------------
+
+WebViewMethodBindingGo::WebViewMethodBindingGo(
+    ChromeBrowserPluginObserver* browser_plugin_observer)
+    : WebViewMethodBinding(browser_plugin_observer,
+                           webview::kMethodGo, 1) {
+}
+
+WebViewMethodBindingGo::~WebViewMethodBindingGo() {
+}
+
+bool WebViewMethodBindingGo::Invoke(const NPVariant* args,
+                                    NPVariant* result) {
+  browser_plugin_observer()->Go(Int32FromNPVariant(args[0]));
+  return true;
+}
+
+}  // namespace chrome