Implement Just-In-Time Flash updates.

chrome/browser/component_updater/widevine_cdm_component_installer.cc

Index: chrome/browser/component_updater/widevine_cdm_component_installer.cc
diff --git a/chrome/browser/component_updater/widevine_cdm_component_installer.cc b/chrome/browser/component_updater/widevine_cdm_component_installer.cc
index eb7460923f49915be318c8933f3b2a3e72aaca51..7efb9d016f1c88dcf2feb1868cc07d1b4d62eb1d 100644
--- a/chrome/browser/component_updater/widevine_cdm_component_installer.cc
+++ b/chrome/browser/component_updater/widevine_cdm_component_installer.cc
@@ -261,6 +261,7 @@ class WidevineCdmComponentInstallerTraits : public ComponentInstallerTraits {
   void GetHash(std::vector<uint8_t>* hash) const override;
   std::string GetName() const override;
   update_client::InstallerAttributes GetInstallerAttributes() const override;
+  void AddMimeTypes(std::vector<std::string>* mime_types) const override;
 
   // Checks and updates CDM adapter if necessary to make sure the latest CDM
   // adapter is always used.
@@ -340,6 +341,10 @@ WidevineCdmComponentInstallerTraits::GetInstallerAttributes() const {
   return update_client::InstallerAttributes();
 }
 
+void WidevineCdmComponentInstallerTraits::AddMimeTypes(
+    std::vector<std::string>* mime_types) const {
+}
+
 static bool HasValidAdapter(const base::FilePath& adapter_version_path,
                             const base::FilePath& adapter_install_path,
                             const std::string& chrome_version) {