Differential updates for components.

chrome/browser/component_updater/swiftshader_component_installer.cc

Index: chrome/browser/component_updater/swiftshader_component_installer.cc
diff --git a/chrome/browser/component_updater/swiftshader_component_installer.cc b/chrome/browser/component_updater/swiftshader_component_installer.cc
index e09e5248f58d6cb491c9ee2bc79e786f5cceddff..5c2eca82cc4d8018b3b3bad1fe0979d41e7b740b 100644
--- a/chrome/browser/component_updater/swiftshader_component_installer.cc
+++ b/chrome/browser/component_updater/swiftshader_component_installer.cc
@@ -105,6 +105,9 @@ class SwiftShaderComponentInstaller : public ComponentInstaller {
   virtual bool Install(const base::DictionaryValue& manifest,
                        const base::FilePath& unpack_path) OVERRIDE;
 
+  virtual bool GetInstalledFile(const std::string& file,
+                                base::FilePath* installed_file) OVERRIDE;
+
  private:
   Version current_version_;
 };
@@ -149,6 +152,11 @@ bool SwiftShaderComponentInstaller::Install(
   return true;
 }
 
+bool SwiftShaderComponentInstaller::GetInstalledFile(
+    const std::string& file, base::FilePath* installed_file) {
+  return false;
+}
+
 void FinishSwiftShaderUpdateRegistration(ComponentUpdateService* cus,
                                          const Version& version) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));