Enable JS detection of whether SPDY was used to load a web page.

Augments the loadTimes() API with a new field, "wasFetchedViaSpdy".

BUG=31615
TEST=flip_network_transaction_unittest


Review URL: http://codereview.chromium.org/518039

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@35943 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 11 insertions, 2 deletions

diff --git a/chrome/renderer/loadtimes_extension_bindings.cc b/chrome/renderer/loadtimes_extension_bindings.cc
index 8688a56..33d46d7 100644
--- a/chrome/renderer/loadtimes_extension_bindings.cc
+++ b/chrome/renderer/loadtimes_extension_bindings.cc
@@ -128,7 +128,9 @@ class LoadTimesExtensionWrapper : public v8::Extension {
         load_times->Set(
             v8::String::New("navigationType"),
             v8::String::New(GetNavigationType(data_source->navigationType())));
-
+        load_times->Set(
+            v8::String::New("wasFetchedViaSpdy"),
+            v8::Boolean::New(navigation_state->was_fetched_via_spdy()));
         return load_times;
       }
     }
diff --git a/chrome/renderer/navigation_state.h b/chrome/renderer/navigation_state.h
index 90c1270..61f63ac 100644
--- a/chrome/renderer/navigation_state.h
+++ b/chrome/renderer/navigation_state.h
@@ -190,6 +190,10 @@ class NavigationState : public WebKit::WebDataSource::ExtraData {
     return cache_policy_override_set_;
   }
 
+  // Indicator if SPDY was used as part of this page load.
+  void set_was_fetched_via_spdy(bool value) { was_fetched_via_spdy_ = value; }
+  bool was_fetched_via_spdy() const { return was_fetched_via_spdy_; }
+
  private:
   NavigationState(PageTransition::Type transition_type,
                   const base::Time& request_time,
@@ -204,7 +208,8 @@ class NavigationState : public WebKit::WebDataSource::ExtraData {
         postpone_loading_data_(false),
         cache_policy_override_set_(false),
         cache_policy_override_(WebKit::WebURLRequest::UseProtocolCachePolicy),
-        user_script_idle_scheduler_(NULL) {
+        user_script_idle_scheduler_(NULL),
+        was_fetched_via_spdy_(false) {
   }
 
   PageTransition::Type transition_type_;
@@ -232,6 +237,8 @@ class NavigationState : public WebKit::WebDataSource::ExtraData {
 
   scoped_ptr<UserScriptIdleScheduler> user_script_idle_scheduler_;
 
+  bool was_fetched_via_spdy_;
+
   DISALLOW_COPY_AND_ASSIGN(NavigationState);
 };