Plumb request interception into the appcache library for both chrome and test_shell.

AppCache library:
* Added AppCacheInterceptor, which is derived from URLRequest::Interceptor.

Chrome:
* Each UserProfile instantiates a ChromeAppCacheService, which is derived from an appcache library class.
* Each ChromeURLRequestContext associated with that profile has a reference to that instance.
* ResourceDispatcherHost pokes AppCacheInterceptor when initiating URLRequests and when returning the response head.

TestShell:
* Added SimpleAppCacheSystem which bundles together appcache lib components for use in a single process with an UI and IO thread.
* TestShellWebKit instantiates and initializes an instance of the above, aimed at at temp directory that will get cleaned up when the test run is over.
* SimpleResourceLoaderBridge pokes the system when initiating URLRequests and when returning the response head.

TEST=none, although many existing tests exercise this stuff
BUG=none

Review URL: http://codereview.chromium.org/173406

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@25099 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 11 insertions, 4 deletions

diff --git a/webkit/appcache/appcache_service.cc b/webkit/appcache/appcache_service.cc
index 0d3579b..0fd5356 100644
--- a/webkit/appcache/appcache_service.cc
+++ b/webkit/appcache/appcache_service.cc
@@ -17,14 +17,21 @@ AppCacheService::~AppCacheService() {
   DCHECK(groups_.empty());
 }
 
-void AppCacheService::RegisterBackendImpl(
+void AppCacheService::Initialize(const FilePath& cache_directory) {
+  // An empty cache directory indicates chrome incognito.
+  cache_directory_ = cache_directory;
+}
+
+void AppCacheService::RegisterBackend(
     AppCacheBackendImpl* backend_impl) {
-  backends_.insert(backend_impl);
+  DCHECK(backends_.find(backend_impl->process_id()) == backends_.end());
+  backends_.insert(
+      BackendMap::value_type(backend_impl->process_id(), backend_impl));
 }
 
-void AppCacheService::UnregisterBackendImpl(
+void AppCacheService::UnregisterBackend(
     AppCacheBackendImpl* backend_impl) {
-  backends_.erase(backend_impl);
+  backends_.erase(backend_impl->process_id());
 }
 
 void AppCacheService::AddCache(AppCache* cache) {