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

Source/core/frame/LocalFrame.cpp

Index: Source/core/frame/LocalFrame.cpp
diff --git a/Source/core/frame/LocalFrame.cpp b/Source/core/frame/LocalFrame.cpp
index fb5dd2a855cae8baf0b8abe045b4f2212be63773..1263f0e3139fcb3403fa7b9d868851e269c3f4b6 100644
--- a/Source/core/frame/LocalFrame.cpp
+++ b/Source/core/frame/LocalFrame.cpp
@@ -51,7 +51,6 @@
 #include "core/html/HTMLPlugInElement.h"
 #include "core/inspector/ConsoleMessageStorage.h"
 #include "core/inspector/InspectorInstrumentation.h"
-#include "core/inspector/InstrumentingAgents.h"
 #include "core/layout/HitTestResult.h"
 #include "core/layout/compositing/RenderLayerCompositor.h"
 #include "core/loader/FrameLoaderClient.h"
@@ -222,7 +221,6 @@
 
 void LocalFrame::trace(Visitor* visitor)
 {
-    visitor->trace(m_instrumentingAgents);
 #if ENABLE(OILPAN)
     visitor->trace(m_destructionObservers);
     visitor->trace(m_loader);
@@ -426,16 +424,6 @@
     return curFrame;
 }
 
-InstrumentingAgents* LocalFrame::instrumentingAgents()
-{
-    return m_instrumentingAgents.get();
-}
-
-void LocalFrame::setInstrumentingAgents(InstrumentingAgents* instrumentingAgents)
-{
-    m_instrumentingAgents = instrumentingAgents;
-}
-
 bool LocalFrame::inScope(TreeScope* scope) const
 {
     ASSERT(scope);
@@ -827,7 +815,6 @@
     , m_pageZoomFactor(parentPageZoomFactor(this))
     , m_textZoomFactor(parentTextZoomFactor(this))
     , m_inViewSourceMode(false)
-    , m_instrumentingAgents(host->instrumentingAgents())
 {
 }