Extract supported codecs from CDM component manifest.

chrome/browser/component_updater/default_component_installer.cc

 // Copyright 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 "base/bind.h"
 #include "base/file_util.h"
 #include "base/files/file_enumerator.h"
 #include "base/files/file_path.h"
 #include "base/values.h"
 #include "base/version.h"
 #include "chrome/browser/component_updater/default_component_installer.h"
 #include "content/public/browser/browser_thread.h"
 
 namespace {
 // Version "0" corresponds to no installed version. By the server's conventions,
 // we represent it as a dotted quad.
 const char kNullVersion[] = "0.0.0.0";
 }  // namespace
 
+ComponentInstallerTraits::~ComponentInstallerTraits() {
+}
+
 DefaultComponentInstaller::DefaultComponentInstaller(
     scoped_ptr<ComponentInstallerTraits> installer_traits)
     : current_version_(kNullVersion) {
   installer_traits_ = installer_traits.Pass();
 }
 
 DefaultComponentInstaller::~DefaultComponentInstaller() {
 }
 
 void DefaultComponentInstaller::Register(ComponentUpdateService* cus) {
@@ skipping 39 matching lines @@
       installer_traits_->GetBaseDirectory().AppendASCII(version.GetString());
   if (base::PathExists(install_path)) {
     if (!base::DeleteFile(install_path, true))
       return false;
   }
   if (!InstallHelper(manifest, unpack_path, install_path)) {
     base::DeleteFile(install_path, true);
     return false;
   }
   current_version_ = version;
-  installer_traits_->ComponentReady(current_version_, GetInstallDirectory());
+  current_manifest_.reset(manifest.DeepCopy());
+  installer_traits_->ComponentReady(
+      current_version_,
+      GetInstallDirectory(),
+      scoped_ptr<base::DictionaryValue>(current_manifest_->DeepCopy()).Pass());
   return true;
 }
 
 bool DefaultComponentInstaller::GetInstalledFile(
     const std::string& file,
     base::FilePath* installed_file) {
   if (current_version_.Equals(base::Version(kNullVersion)))
     return false;  // No component has been installed yet.
 
   *installed_file =
@@ skipping 36 matching lines @@
       }
     } else {
       latest_dir = path;
       latest_version = version;
       found = true;
     }
   }
 
   if (found) {
     current_version_ = latest_version;
+    // TODO(waffles): Why do we save these as members rather than passing them
+    // to FinishRegistration()?
     base::ReadFileToString(latest_dir.AppendASCII("manifest.fingerprint"),
                            &current_fingerprint_);
+    current_manifest_.reset(ReadComponentManifest(latest_dir));
+    if (!current_manifest_) {
+      DLOG(ERROR) << "Failed to read manifest for "
+                  << installer_traits_->GetName() << " ("
+                  << base_dir.MaybeAsASCII() << ").";
+      return;
+    }
   }
 
   // Remove older versions of the component. None should be in use during
   // browser startup.
   for (std::vector<base::FilePath>::iterator iter = older_dirs.begin();
        iter != older_dirs.end(); ++iter) {
    base::DeleteFile(*iter, true);
   }
 
   content::BrowserThread::PostTask(
@@ skipping 19 matching lines @@
   installer_traits_->GetHash(&crx.pk_hash);
   ComponentUpdateService::Status status = cus->RegisterComponent(crx);
   if (status != ComponentUpdateService::kOk &&
       status != ComponentUpdateService::kReplaced) {
     NOTREACHED() << "Component registration failed for "
                  << installer_traits_->GetName();
     return;
   }
 
   if (current_version_.CompareTo(base::Version(kNullVersion)) > 0) {
+    // TODO(waffles): Why is this function called on the FILE thread? The only
+    // implementation just posts back to the UI thread. Should we instead post
+    // to UI in Install()?
+    scoped_ptr<base::DictionaryValue> manifest_copy(
+        current_manifest_->DeepCopy());
     content::BrowserThread::PostTask(
         content::BrowserThread::FILE, FROM_HERE,
         base::Bind(&ComponentInstallerTraits::ComponentReady,
                    base::Unretained(installer_traits_.get()),
                    current_version_,
-                   GetInstallDirectory()));
+                   GetInstallDirectory(),
+                   base::Passed(&manifest_copy)));
   }
 }