A prototype of resource loading through automation

In a test scenario where we need to load resources over
automation, we intercept the URL reqeusts and serve
them using automation IPCs.

This resource loading can be enabled per tab created
by automation. 

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/145024

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@20267 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 25 insertions, 6 deletions

diff --git a/chrome/common/net/url_request_intercept_job.cc b/chrome/common/net/url_request_intercept_job.cc
index bb5dd8c..af1c8c7 100644
--- a/chrome/common/net/url_request_intercept_job.cc
+++ b/chrome/common/net/url_request_intercept_job.cc
@@ -101,10 +101,25 @@ bool URLRequestInterceptJob::GetCharset(std::string* charset) {
   return request_->response_headers()->GetCharset(charset);
 }
 
-bool URLRequestInterceptJob::GetContentEncoding(std::string* encoding_type) {
-  // TODO(darin): what if there are multiple content encodings?
-  return request_->response_headers()->EnumerateHeader(NULL, "Content-Encoding",
-                                                       encoding_type);
+bool URLRequestInterceptJob::GetContentEncodings(
+    std::vector<Filter::FilterType>* encoding_types) {
+  DCHECK(encoding_types->empty());
+  if (!request_->response_headers())
+    return false;
+
+  std::string encoding_type;
+  void* iter = NULL;
+  while (request_->response_headers()->EnumerateHeader(
+      &iter, "Content-Encoding", &encoding_type)) {
+    encoding_types->push_back(Filter::ConvertEncodingToType(encoding_type));
+  }
+
+  // Even if encoding types are empty, there is a chance that we need to add
+  // some decoding, as some proxies strip encoding completely. In such cases,
+  // we may need to add (for example) SDCH filtering (when the context suggests
+  // it is appropriate).
+  Filter::FixupEncodingTypes(*this, encoding_types);
+  return !encoding_types->empty();
 }
 
 void URLRequestInterceptJob::GetResponseInfo(net::HttpResponseInfo* info) {
diff --git a/chrome/common/net/url_request_intercept_job.h b/chrome/common/net/url_request_intercept_job.h
index 73f354d..07db154 100644
--- a/chrome/common/net/url_request_intercept_job.h
+++ b/chrome/common/net/url_request_intercept_job.h
@@ -35,18 +35,22 @@ class URLRequestInterceptJob
   // URLRequestJob
   virtual void Start();
   virtual void Kill();
-  virtual bool ReadRawData(net::IOBuffer* buf, int buf_size, int* bytes_read);
   virtual bool GetMimeType(std::string* mime_type) const;
   virtual bool GetCharset(std::string* charset);
   virtual void GetResponseInfo(net::HttpResponseInfo* info);
   virtual int GetResponseCode() const;
-  virtual bool GetContentEncoding(std::string* encoding_type);
+  virtual bool GetContentEncodings(
+      std::vector<Filter::FilterType>* encoding_types);
   virtual bool IsRedirectResponse(GURL* location, int* http_status_code);
 
   // NotificationObserver
   virtual void Observe(NotificationType type,
                        const NotificationSource& source,
                        const NotificationDetails& details);
+
+ protected:
+  virtual bool ReadRawData(net::IOBuffer* buf, int buf_size, int* bytes_read);
+
  private:
   void StartAsync();
   void DetachPlugin();