Move ExtensionCache to //extensions

chrome/browser/extensions/chrome_extensions_browser_client.h

Index: chrome/browser/extensions/chrome_extensions_browser_client.h
diff --git a/chrome/browser/extensions/chrome_extensions_browser_client.h b/chrome/browser/extensions/chrome_extensions_browser_client.h
index c9153f1d3596111c7274333a9d3bb2914da43177..413ddbbf50d6ff7f9d08f2e93eb877e634f69839 100644
--- a/chrome/browser/extensions/chrome_extensions_browser_client.h
+++ b/chrome/browser/extensions/chrome_extensions_browser_client.h
@@ -96,6 +96,7 @@ class ChromeExtensionsBrowserClient : public ExtensionsBrowserClient {
       const std::string& event_name,
       scoped_ptr<base::ListValue> args) override;
   virtual net::NetLog* GetNetLog() override;
+  virtual ExtensionCache* GetExtensionCache() override;
 
  private:
   friend struct base::DefaultLazyInstanceTraits<ChromeExtensionsBrowserClient>;
@@ -111,6 +112,8 @@ class ChromeExtensionsBrowserClient : public ExtensionsBrowserClient {
 
   scoped_ptr<ChromeComponentExtensionResourceManager> resource_manager_;
 
+  scoped_ptr<ExtensionCache> extension_cache_;
+
   DISALLOW_COPY_AND_ASSIGN(ChromeExtensionsBrowserClient);
 };