Navigation transitions: Parse out transition-entering-stylesheet link headers.

content/browser/transition_request_manager.h

Index: content/browser/transition_request_manager.h
diff --git a/content/browser/transition_request_manager.h b/content/browser/transition_request_manager.h
index 9ef969b49dba26cbdaad5a97f9df2c9161a3133a..a311afeee33a672091dd429ddd5c013be7c91428 100644
--- a/content/browser/transition_request_manager.h
+++ b/content/browser/transition_request_manager.h
@@ -7,15 +7,29 @@
 
 #include <set>
 #include <utility>
+#include <vector>
 
 #include "base/basictypes.h"
+#include "base/memory/ref_counted.h"
 #include "content/common/content_export.h"
+#include "url/gurl.h"
 
 template <typename T>
 struct DefaultSingletonTraits;
 
+namespace net {
+class HttpResponseHeaders;
+}
+
 namespace content {
 
+struct TransitionLayerData {
+  CONTENT_EXPORT TransitionLayerData();
+  CONTENT_EXPORT ~TransitionLayerData();
+
+  std::vector<GURL> transition_stylesheets;
+};
+
 // TransitionRequestManager is used to handle bookkeeping for transition
 // requests and responses.
 //
@@ -27,6 +41,13 @@ class TransitionRequestManager {
   // Returns the singleton instance.
   CONTENT_EXPORT static TransitionRequestManager* GetInstance();
 
+  // Parses out any transition-entering-stylesheet link headers from the
+  // response headers.
+  CONTENT_EXPORT static void ParseTransitionStylesheetsFromHeaders(
+      scoped_refptr<net::HttpResponseHeaders> headers,
+      TransitionLayerData& transition_layer_data,
+      const GURL& resolve_address);
+
   // Returns whether the RenderFrameHost specified by the given IDs currently
   // has a pending transition request. If so, we will have to delay the
   // response until the embedder resumes the request.