Media Related changes for TabCapture API

chrome/renderer/extensions/tab_capture_custom_bindings.cc

Index: chrome/renderer/extensions/tab_capture_custom_bindings.cc
diff --git a/chrome/renderer/extensions/tab_capture_custom_bindings.cc b/chrome/renderer/extensions/tab_capture_custom_bindings.cc
new file mode 100644
index 0000000000000000000000000000000000000000..42c04db8503d4a628e01100ff96bebbb86ef2727
--- /dev/null
+++ b/chrome/renderer/extensions/tab_capture_custom_bindings.cc
@@ -0,0 +1,59 @@
+// 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/tab_capture_custom_bindings.h"
+
+#include <string>
+
+#include "content/public/renderer/render_view.h"
+#include "third_party/WebKit/Source/Platform/chromium/public/WebMediaStreamSource.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebDeviceMediaRequest.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebUserMediaClient.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebUserMediaRequest.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebString.h"
+#include "v8/include/v8.h"
+
+namespace {
+
+static v8::Handle<v8::Value> RequestDeviceMedia(const v8::Arguments& args) {
+  if (args.Length() != 4
+      || !args[0]->IsString()
+      || !args[1]->IsObject()
+      || !args[2]->IsFunction()
+      || !args[3]->IsFunction()) {
+    NOTREACHED();
+    return v8::Undefined();
+  }
+
+  WebKit::WebFrame* webFrame = WebKit::WebFrame::frameForCurrentContext();
+  content::RenderView* renderView =
+      content::RenderView::FromWebView(webFrame->view());
+  WebKit::WebUserMediaClient *client = renderView->GetUserMediaClient();
+
+  std::string deviceId = *v8::String::Utf8Value(args[0]);
+  WebKit::WebDeviceMediaRequest* request =
+      WebKit::WebDeviceMediaRequest::createFromV8(
+          WebKit::WebString::fromUTF8(deviceId),
+          args[1]->ToObject(),
+          args[2],
+          args[3]);
+  if (!request)
+    return v8::Undefined();
+
+  client->requestDeviceMedia(*request);
+  return v8::Integer::New(0);
+}
+
+}  // namespace
+
+namespace extensions {
+
+TabCaptureCustomBindings::TabCaptureCustomBindings()
+    : ChromeV8Extension(NULL) {
+  RouteStaticFunction("RequestDeviceMedia", &RequestDeviceMedia);
+}
+
+}  // namespace extensions
+