DevTools: use per-LocalFrame instrumenting agents instead of per-Page ones.

Source/core/page/Page.cpp

Index: Source/core/page/Page.cpp
diff --git a/Source/core/page/Page.cpp b/Source/core/page/Page.cpp
index 901f784c897270eee7b68bfdd4cffbf536873f5f..90c96e47366a7e78bc26e3ac4f1662bf873a46b4 100644
--- a/Source/core/page/Page.cpp
+++ b/Source/core/page/Page.cpp
@@ -93,12 +93,13 @@ void Page::networkStateChanged(bool online)
             if (frame->isLocalFrame())
                 frames.append(toLocalFrame(frame));
         }
-        InspectorInstrumentation::networkStateChanged(page, online);
     }
 
     AtomicString eventName = online ? EventTypeNames::online : EventTypeNames::offline;
-    for (unsigned i = 0; i < frames.size(); i++)
+    for (unsigned i = 0; i < frames.size(); i++) {
         frames[i]->domWindow()->dispatchEvent(Event::create(eventName));
+        InspectorInstrumentation::networkStateChanged(frames[i].get(), online);

[yurys, 2015/02/03 06:44:00]

Don't we expect this event to be dispatched once per FrameHost?

[pfeldman, 2015/02/03 07:09:16]

Present plan is to attach to connected localframe hierarchies, so one frame host
might have multiple inspectors attached.

+    }
 }
 
 float deviceScaleFactor(LocalFrame* frame)