Remove unused Flash-related code:

chrome/browser/component_updater/flash_component_installer.h

Index: chrome/browser/component_updater/flash_component_installer.h
diff --git a/chrome/browser/component_updater/flash_component_installer.h b/chrome/browser/component_updater/flash_component_installer.h
index 62e54189db0106670d9881a9f4d4614e6fcec7c0..45fe22ff10b19526d0984b6068ecc3278f9fa83d 100644
--- a/chrome/browser/component_updater/flash_component_installer.h
+++ b/chrome/browser/component_updater/flash_component_installer.h
@@ -12,9 +12,6 @@ namespace base {
 class DictionaryValue;
 }
 
-// Component update registration for built-in flash player (non-Pepper).
-void RegisterNPAPIFlashComponent(ComponentUpdateService* cus);
-
 // Our job is to 1) find what Pepper flash is installed (if any) and 2) register
 // with the component updater to download the latest version when available.
 // The first part is IO intensive so we do it asynchronously in the file thread.