Add a gyp flag to allow removing dependency on ppapi.

chrome/browser/browsing_data/browsing_data_remover.h

Index: chrome/browser/browsing_data/browsing_data_remover.h
diff --git a/chrome/browser/browsing_data/browsing_data_remover.h b/chrome/browser/browsing_data/browsing_data_remover.h
index 25b95d5b6b6243b6c7cf810499756ff3a4032ca7..b0a39bc3cc0973ff118b0d6fc7e30aa2cd5dcbfc 100644
--- a/chrome/browser/browsing_data/browsing_data_remover.h
+++ b/chrome/browser/browsing_data/browsing_data_remover.h
@@ -51,8 +51,10 @@ struct SessionStorageUsageInfo;
 // visits in url database, downloads, cookies ...
 
 class BrowsingDataRemover : public content::NotificationObserver,
-                            public base::WaitableEventWatcher::Delegate,
-                            public PepperFlashSettingsManager::Client {
+#if defined(ENABLE_PLUGINS)
+                            public PepperFlashSettingsManager::Client,
+#endif
+                            public base::WaitableEventWatcher::Delegate {
  public:
   // Time period ranges available when doing browsing data removals.
   enum TimePeriod {
@@ -213,9 +215,11 @@ class BrowsingDataRemover : public content::NotificationObserver,
   virtual void OnWaitableEventSignaled(
       base::WaitableEvent* waitable_event) OVERRIDE;
 
+#if defined(ENABLE_PLUGINS)
   // PepperFlashSettingsManager::Client implementation.
   virtual void OnDeauthorizeContentLicensesCompleted(uint32 request_id,
                                                      bool success) OVERRIDE;
+#endif
 
   // Removes the specified items related to browsing for a specific host. If the
   // provided |origin| is empty, data is removed for all origins. The
@@ -366,10 +370,12 @@ class BrowsingDataRemover : public content::NotificationObserver,
   scoped_ptr<content::PluginDataRemover> plugin_data_remover_;
   base::WaitableEventWatcher watcher_;
 
+#if defined(ENABLE_PLUGINS)
   // Used to deauthorize content licenses for Pepper Flash.
   scoped_ptr<PepperFlashSettingsManager> pepper_flash_settings_manager_;
-  uint32 deauthorize_content_licenses_request_id_;
+#endif
 
+  uint32 deauthorize_content_licenses_request_id_;
   // True if we're waiting for various data to be deleted.
   // These may only be accessed from UI thread in order to avoid races!
   bool waiting_for_clear_cache_;