Initial checkin of chromecast content embedder (cast_shell) and related build scripts.

chromecast/shell/browser/cast_content_browser_client.cc

+// Copyright 2014 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 "chromecast/shell/browser/cast_content_browser_client.h"
+
+#include "base/command_line.h"
+#include "chromecast/shell/browser/cast_browser_context.h"
+#include "chromecast/shell/browser/cast_browser_main_parts.h"
+#include "chromecast/shell/browser/geolocation/cast_access_token_store.h"
+#include "chromecast/shell/browser/url_request_context_factory.h"
+#include "content/public/browser/certificate_request_result_type.h"
+#include "content/public/browser/render_process_host.h"
+#include "content/public/common/content_descriptors.h"
+#include "content/public/common/content_switches.h"
+#include "content/public/common/url_constants.h"
+#include "webkit/common/webpreferences.h"
+
+namespace chromecast {
+namespace shell {
+
+CastContentBrowserClient::CastContentBrowserClient()
+    : url_request_context_factory_(new URLRequestContextFactory()) {
+}
+
+CastContentBrowserClient::~CastContentBrowserClient() {
+}
+
+content::BrowserMainParts* CastContentBrowserClient::CreateBrowserMainParts(
+    const content::MainFunctionParams& parameters) {
+  shell_browser_main_parts_.reset(
+      new CastBrowserMainParts(parameters, url_request_context_factory_.get()));
+  return shell_browser_main_parts_.get();
+}
+
+void CastContentBrowserClient::RenderProcessWillLaunch(
+    content::RenderProcessHost* host) {
+}
+
+net::URLRequestContextGetter* CastContentBrowserClient::CreateRequestContext(
+    content::BrowserContext* browser_context,
+    content::ProtocolHandlerMap* protocol_handlers,
+    content::URLRequestInterceptorScopedVector protocol_interceptors) {
+  return url_request_context_factory_->CreateMainGetter(browser_context,
+                                                        protocol_handlers);
+}
+
+bool CastContentBrowserClient::IsHandledURL(const GURL& url) {
+  if (!url.is_valid())
+    return false;
+  // Keep in sync with ProtocolHandlers added by
+  // URLRequestContextFactory::CreateMainGetter.

[dcheng, 2014/06/27 17:41:39]

Is there a better way to do this? This comment is already stale, I can't seem to
find a reference to CreateMainGetter.

[lcwu1, 2014/06/28 00:58:17]

The comment was actually copied from content shell's
ShellContentBrowserClient::IsHandledURL implementation. :-) And it actually
doesn't make sense for us because we only want to allow the schemes listed
below. I will remove the comment.

CreateMainGetter is our own helper function defined in
chromecast/shell/browser/url_request_context_factory.cc. It is called inside
CastContentBrowserClient::CreateRequestContext().

+  static const char* const kProtocolList[] = {
+      url::kBlobScheme,
+      url::kFileSystemScheme,
+      content::kChromeUIScheme,
+      content::kChromeDevToolsScheme,
+      url::kDataScheme,
+  };
+  for (size_t i = 0; i < arraysize(kProtocolList); ++i) {
+    if (url.scheme() == kProtocolList[i])
+      return true;
+  }
+  return false;
+}
+
+void CastContentBrowserClient::AppendExtraCommandLineSwitches(
+    base::CommandLine* command_line,
+    int child_process_id) {
+
+  std::string process_type =
+      command_line->GetSwitchValueNative(switches::kProcessType);
+  // Renderer process comamndline
+  if (process_type == switches::kRendererProcess) {
+    // TODO(lcwu): Append the browser command-line switches we want to
+    // propagate to renderer here.
+  }
+}
+
+content::AccessTokenStore* CastContentBrowserClient::CreateAccessTokenStore() {
+  return new CastAccessTokenStore(shell_browser_main_parts_->browser_context());
+}
+
+void CastContentBrowserClient::OverrideWebkitPrefs(
+    content::RenderViewHost* render_view_host,
+    const GURL& url,
+    WebPreferences* prefs) {
+  prefs->allow_scripts_to_close_windows = true;
+  // TODO(lcwu): We have to set this pref to true by default because some
+  // content providers such as YouTube use plain http requests to retrieve
+  // media data chunks while running in a https page. This pref should be
+  // disabled once all the content providers are no longer doing that.
+  prefs->allow_running_insecure_content = true;
+}
+
+std::string CastContentBrowserClient::GetApplicationLocale() {
+  return "en-US";
+}
+
+void CastContentBrowserClient::AllowCertificateError(
+    int render_process_id,
+    int render_view_id,
+    int cert_error,
+    const net::SSLInfo& ssl_info,
+    const GURL& request_url,
+    ResourceType::Type resource_type,
+    bool overridable,
+    bool strict_enforcement,
+    const base::Callback<void(bool)>& callback,
+    content::CertificateRequestResultType* result) {
+  // Allow developers to override certificate errors.
+  // Otherwise, any fatal certificate errors will cause an abort.
+  *result = content::CERTIFICATE_REQUEST_RESULT_TYPE_CANCEL;
+  return;
+}
+
+bool CastContentBrowserClient::CanCreateWindow(
+    const GURL& opener_url,
+    const GURL& opener_top_level_frame_url,
+    const GURL& source_origin,
+    WindowContainerType container_type,
+    const GURL& target_url,
+    const content::Referrer& referrer,
+    WindowOpenDisposition disposition,
+    const blink::WebWindowFeatures& features,
+    bool user_gesture,
+    bool opener_suppressed,
+    content::ResourceContext* context,
+    int render_process_id,
+    int opener_id,
+    bool* no_javascript_access) {
+  *no_javascript_access = true;
+  return false;
+}
+
+void CastContentBrowserClient::GetAdditionalMappedFilesForChildProcess(
+    const base::CommandLine& command_line,
+    int child_process_id,
+    std::vector<content::FileDescriptorInfo>* mappings) {
+  // TODO(lcwu): Push crash dump signal fd here.
+}
+
+}  // namespace shell
+}  // namespace chromecast