Introduce the ENABLE_BROWSER_CDMS macro.

content/browser/media/android/browser_cdm_manager.cc

Index: content/browser/media/android/browser_cdm_manager.cc
diff --git a/content/browser/media/android/browser_cdm_manager.cc b/content/browser/media/android/browser_cdm_manager.cc
deleted file mode 100644
index 20013ec77bf60559f07b26d61d1c7eb6a1df78c8..0000000000000000000000000000000000000000
--- a/content/browser/media/android/browser_cdm_manager.cc
+++ /dev/null
@@ -1,294 +0,0 @@
-// 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 "content/browser/media/android/browser_cdm_manager.h"
-
-#include "base/command_line.h"
-#include "base/stl_util.h"
-#include "content/common/media/cdm_messages.h"
-#include "content/public/browser/browser_context.h"
-#include "content/public/browser/render_frame_host.h"
-#include "content/public/browser/render_process_host.h"
-#include "content/public/browser/render_view_host.h"
-#include "content/public/browser/web_contents.h"
-#include "content/public/common/content_client.h"
-#include "content/public/common/content_switches.h"
-#include "media/base/browser_cdm.h"
-#include "media/base/browser_cdm_factory.h"
-#include "media/base/media_switches.h"
-
-namespace content {
-
-using media::BrowserCdm;
-using media::MediaKeys;
-
-// Maximum lengths for various EME API parameters. These are checks to
-// prevent unnecessarily large parameters from being passed around, and the
-// lengths are somewhat arbitrary as the EME spec doesn't specify any limits.
-const size_t kMaxInitDataLength = 64 * 1024;  // 64 KB
-const size_t kMaxSessionResponseLength = 64 * 1024;  // 64 KB
-const size_t kMaxKeySystemLength = 256;
-
-// static
-BrowserCdmManager* BrowserCdmManager::Create(RenderFrameHost* rfh) {
-  return new BrowserCdmManager(rfh);
-}
-
-BrowserCdmManager::BrowserCdmManager(RenderFrameHost* render_frame_host)
-    : render_frame_host_(render_frame_host),
-      web_contents_(WebContents::FromRenderFrameHost(render_frame_host)),
-      weak_ptr_factory_(this) {
-}
-
-BrowserCdmManager::~BrowserCdmManager() {
-  STLDeleteValues(&cdm_map_);
-}
-
-BrowserCdm* BrowserCdmManager::GetCdm(int cdm_id) {
-  CdmMap::const_iterator iter = cdm_map_.find(cdm_id);
-  return (iter == cdm_map_.end()) ? NULL : iter->second;
-}
-
-void BrowserCdmManager::OnSessionCreated(
-    int cdm_id,
-    uint32 session_id,
-    const std::string& web_session_id) {
-  Send(new CdmMsg_SessionCreated(
-      RoutingID(), cdm_id, session_id, web_session_id));
-}
-
-void BrowserCdmManager::OnSessionMessage(
-    int cdm_id,
-    uint32 session_id,
-    const std::vector<uint8>& message,
-    const GURL& destination_url) {
-  GURL verified_gurl = destination_url;
-  if (!verified_gurl.is_valid() && !verified_gurl.is_empty()) {
-    DLOG(WARNING) << "SessionMessage destination_url is invalid : "
-                  << destination_url.possibly_invalid_spec();
-    verified_gurl = GURL::EmptyGURL();  // Replace invalid destination_url.
-  }
-
-  Send(new CdmMsg_SessionMessage(
-      RoutingID(), cdm_id, session_id, message, verified_gurl));
-}
-
-void BrowserCdmManager::OnSessionReady(int cdm_id, uint32 session_id) {
-  Send(new CdmMsg_SessionReady(RoutingID(), cdm_id, session_id));
-}
-
-void BrowserCdmManager::OnSessionClosed(int cdm_id, uint32 session_id) {
-  Send(new CdmMsg_SessionClosed(RoutingID(), cdm_id, session_id));
-}
-
-void BrowserCdmManager::OnSessionError(int cdm_id,
-                                       uint32 session_id,
-                                       MediaKeys::KeyError error_code,
-                                       uint32 system_code) {
-  Send(new CdmMsg_SessionError(
-      RoutingID(), cdm_id, session_id, error_code, system_code));
-}
-
-void BrowserCdmManager::OnInitializeCdm(int cdm_id,
-                                                const std::string& key_system,
-                                                const GURL& security_origin) {
-  if (key_system.size() > kMaxKeySystemLength) {
-    // This failure will be discovered and reported by OnCreateSession()
-    // as GetCdm() will return null.
-    NOTREACHED() << "Invalid key system: " << key_system;
-    return;
-  }
-
-  AddCdm(cdm_id, key_system, security_origin);
-}
-
-void BrowserCdmManager::OnCreateSession(
-    int cdm_id,
-    uint32 session_id,
-    CdmHostMsg_CreateSession_ContentType content_type,
-    const std::vector<uint8>& init_data) {
-  if (init_data.size() > kMaxInitDataLength) {
-    LOG(WARNING) << "InitData for ID: " << cdm_id
-                 << " too long: " << init_data.size();
-    OnSessionError(cdm_id, session_id, MediaKeys::kUnknownError, 0);
-    return;
-  }
-
-  // Convert the session content type into a MIME type. "audio" and "video"
-  // don't matter, so using "video" for the MIME type.
-  // Ref:
-  // https://dvcs.w3.org/hg/html-media/raw-file/default/encrypted-media/encrypted-media.html#dom-createsession
-  std::string mime_type;
-  switch (content_type) {
-    case CREATE_SESSION_TYPE_WEBM:
-      mime_type = "video/webm";
-      break;
-    case CREATE_SESSION_TYPE_MP4:
-      mime_type = "video/mp4";
-      break;
-    default:
-      NOTREACHED();
-      return;
-  }
-
-#if defined(OS_ANDROID)
-  if (CommandLine::ForCurrentProcess()
-      ->HasSwitch(switches::kDisableInfobarForProtectedMediaIdentifier)) {
-    CreateSessionIfPermitted(cdm_id, session_id, mime_type, init_data, true);
-    return;
-  }
-#endif
-
-  BrowserCdm* cdm = GetCdm(cdm_id);
-  if (!cdm) {
-    DLOG(WARNING) << "No CDM for ID " << cdm_id << " found";
-    OnSessionError(cdm_id, session_id, MediaKeys::kUnknownError, 0);
-    return;
-  }
-
-  BrowserContext* context =
-      web_contents_->GetRenderProcessHost()->GetBrowserContext();
-
-  std::map<int, GURL>::const_iterator iter =
-      cdm_security_origin_map_.find(cdm_id);
-  if (iter == cdm_security_origin_map_.end()) {
-    NOTREACHED();
-    OnSessionError(cdm_id, session_id, MediaKeys::kUnknownError, 0);
-    return;
-  }
-
-  context->RequestProtectedMediaIdentifierPermission(
-      web_contents_->GetRenderProcessHost()->GetID(),
-      web_contents_->GetRenderViewHost()->GetRoutingID(),
-      iter->second,
-      base::Bind(&BrowserCdmManager::CreateSessionIfPermitted,
-                 weak_ptr_factory_.GetWeakPtr(),
-                 cdm_id,
-                 session_id,
-                 mime_type,
-                 init_data));
-}
-
-void BrowserCdmManager::OnUpdateSession(
-    int cdm_id,
-    uint32 session_id,
-    const std::vector<uint8>& response) {
-  BrowserCdm* cdm = GetCdm(cdm_id);
-  if (!cdm) {
-    DLOG(WARNING) << "No CDM for ID " << cdm_id << " found";
-    OnSessionError(cdm_id, session_id, MediaKeys::kUnknownError, 0);
-    return;
-  }
-
-  if (response.size() > kMaxSessionResponseLength) {
-    LOG(WARNING) << "Response for ID " << cdm_id
-                 << " is too long: " << response.size();
-    OnSessionError(cdm_id, session_id, MediaKeys::kUnknownError, 0);
-    return;
-  }
-
-  cdm->UpdateSession(session_id, &response[0], response.size());
-}
-
-void BrowserCdmManager::OnReleaseSession(int cdm_id, uint32 session_id) {
-  BrowserCdm* cdm = GetCdm(cdm_id);
-  if (!cdm) {
-    DLOG(WARNING) << "No CDM for ID " << cdm_id << " found";
-    OnSessionError(cdm_id, session_id, MediaKeys::kUnknownError, 0);
-    return;
-  }
-
-  cdm->ReleaseSession(session_id);
-}
-
-void BrowserCdmManager::OnDestroyCdm(int cdm_id) {
-  BrowserCdm* cdm = GetCdm(cdm_id);
-  if (!cdm)
-    return;
-
-  CancelAllPendingSessionCreations(cdm_id);
-  RemoveCdm(cdm_id);
-}
-
-void BrowserCdmManager::CancelAllPendingSessionCreations(int cdm_id) {
-  BrowserContext* context =
-      web_contents_->GetRenderProcessHost()->GetBrowserContext();
-  std::map<int, GURL>::const_iterator iter =
-      cdm_security_origin_map_.find(cdm_id);
-  if (iter == cdm_security_origin_map_.end())
-    return;
-  context->CancelProtectedMediaIdentifierPermissionRequests(
-      web_contents_->GetRenderProcessHost()->GetID(),
-      web_contents_->GetRenderViewHost()->GetRoutingID(),
-      iter->second);
-}
-
-void BrowserCdmManager::AddCdm(int cdm_id,
-                                       const std::string& key_system,
-                                       const GURL& security_origin) {
-  DCHECK(!GetCdm(cdm_id));
-  base::WeakPtr<BrowserCdmManager> weak_this = weak_ptr_factory_.GetWeakPtr();
-  scoped_ptr<BrowserCdm> cdm(media::CreateBrowserCdm(
-      key_system,
-      base::Bind(&BrowserCdmManager::OnSessionCreated, weak_this, cdm_id),
-      base::Bind(&BrowserCdmManager::OnSessionMessage, weak_this, cdm_id),
-      base::Bind(&BrowserCdmManager::OnSessionReady, weak_this, cdm_id),
-      base::Bind(&BrowserCdmManager::OnSessionClosed, weak_this, cdm_id),
-      base::Bind(&BrowserCdmManager::OnSessionError, weak_this, cdm_id)));
-
-  if (!cdm) {
-    // This failure will be discovered and reported by OnCreateSession()
-    // as GetCdm() will return null.
-    DVLOG(1) << "failed to create CDM.";
-    return;
-  }
-
-  cdm_map_[cdm_id] = cdm.release();
-  cdm_security_origin_map_[cdm_id] = security_origin;
-}
-
-void BrowserCdmManager::RemoveCdm(int cdm_id) {
-  // TODO(xhwang): Detach CDM from the player it's set to. In prefixed
-  // EME implementation the current code is fine because we always destroy the
-  // player before we destroy the DrmBridge. This will not always be the case
-  // in unprefixed EME implementation.
-  CdmMap::iterator iter = cdm_map_.find(cdm_id);
-  if (iter != cdm_map_.end()) {
-    delete iter->second;
-    cdm_map_.erase(iter);
-  }
-  cdm_security_origin_map_.erase(cdm_id);
-}
-
-int BrowserCdmManager::RoutingID() {
-  return render_frame_host_->GetRoutingID();
-}
-
-bool BrowserCdmManager::Send(IPC::Message* msg) {
-  return render_frame_host_->Send(msg);
-}
-
-void BrowserCdmManager::CreateSessionIfPermitted(
-    int cdm_id,
-    uint32 session_id,
-    const std::string& content_type,
-    const std::vector<uint8>& init_data,
-    bool permitted) {
-  if (!permitted) {
-    OnSessionError(cdm_id, session_id, MediaKeys::kUnknownError, 0);
-    return;
-  }
-
-  BrowserCdm* cdm = GetCdm(cdm_id);
-  if (!cdm) {
-    DLOG(WARNING) << "No CDM for ID: " << cdm_id << " found";
-    OnSessionError(cdm_id, session_id, MediaKeys::kUnknownError, 0);
-    return;
-  }
-
-  // This could fail, in which case a SessionError will be fired.
-  cdm->CreateSession(session_id, content_type, &init_data[0], init_data.size());
-}
-
-}  // namespace content