Initialize debugger together with isolate.

third_party/WebKit/Source/web/WebDevToolsAgentImpl.cpp

Index: third_party/WebKit/Source/web/WebDevToolsAgentImpl.cpp
diff --git a/third_party/WebKit/Source/web/WebDevToolsAgentImpl.cpp b/third_party/WebKit/Source/web/WebDevToolsAgentImpl.cpp
index 6ed085e04cb4f01be613b013a9fea3753e86bd46..5eae3a1c4f4025ee2f9f9d7e2c5003b31f5941ae 100644
--- a/third_party/WebKit/Source/web/WebDevToolsAgentImpl.cpp
+++ b/third_party/WebKit/Source/web/WebDevToolsAgentImpl.cpp
@@ -35,7 +35,6 @@
 #include "core/frame/FrameView.h"
 #include "core/frame/LocalFrame.h"
 #include "core/frame/Settings.h"
-#include "core/inspector/IdentifiersFactory.h"
 #include "core/inspector/InspectedFrames.h"
 #include "core/inspector/InspectorAnimationAgent.h"
 #include "core/inspector/InspectorApplicationCacheAgent.h"
@@ -113,9 +112,7 @@ public:
             return;
         OwnPtr<ClientMessageLoopAdapter> instance = adoptPtr(new ClientMessageLoopAdapter(adoptPtr(client->createClientMessageLoop())));
         s_instance = instance.get();
-        v8::Isolate* isolate = V8PerIsolateData::mainThreadIsolate();
-        V8PerIsolateData* data = V8PerIsolateData::from(isolate);
-        data->setThreadDebugger(MainThreadDebugger::create(instance.release(), isolate));
+        MainThreadDebugger::instance()->setClientMessageLoop(instance.release());
     }
 
     static void webViewImplClosed(WebViewImpl* view)
@@ -327,10 +324,6 @@ WebDevToolsAgentImpl::WebDevToolsAgentImpl(
     ASSERT(isMainThread());
     ASSERT(m_webLocalFrameImpl->frame());
 
-    long processId = Platform::current()->getUniqueIdForProcess();
-    ASSERT(processId > 0);
-    IdentifiersFactory::setProcessId(processId);
-
     ClientMessageLoopAdapter::ensureMainThreadDebuggerCreated(m_client);
     MainThreadDebugger* mainThreadDebugger = MainThreadDebugger::instance();