Revert of DevTools: remove dependency of most agents on InspectorPageAgent

Source/core/inspector/InspectorInputAgent.h

Index: Source/core/inspector/InspectorInputAgent.h
diff --git a/Source/core/inspector/InspectorInputAgent.h b/Source/core/inspector/InspectorInputAgent.h
index f74858e04be679dd6d52e1b452a4340fb5a33408..368827f22b9db79b98de643b78b56a521aec17c3 100644
--- a/Source/core/inspector/InspectorInputAgent.h
+++ b/Source/core/inspector/InspectorInputAgent.h
@@ -38,16 +38,18 @@
 #include "wtf/text/WTFString.h"
 
 namespace blink {
-class LocalFrame;
+class InspectorPageAgent;
+class PlatformKeyboardEvent;
+class PlatformMouseEvent;
 
 typedef String ErrorString;
 
 class InspectorInputAgent final : public InspectorBaseAgent<InspectorInputAgent, InspectorFrontend::Input>, public InspectorBackendDispatcher::InputCommandHandler {
     WTF_MAKE_NONCOPYABLE(InspectorInputAgent);
 public:
-    static PassOwnPtrWillBeRawPtr<InspectorInputAgent> create(LocalFrame* inspectedFrame)
+    static PassOwnPtrWillBeRawPtr<InspectorInputAgent> create(InspectorPageAgent* pageAgent)
     {
-        return adoptPtrWillBeNoop(new InspectorInputAgent(inspectedFrame));
+        return adoptPtrWillBeNoop(new InspectorInputAgent(pageAgent));
     }
 
     virtual ~InspectorInputAgent();
@@ -56,9 +58,9 @@
     // Methods called from the frontend for simulating input.
     virtual void dispatchTouchEvent(ErrorString*, const String& type, const RefPtr<JSONArray>& touchPoints, const int* modifiers, const double* timestamp) override;
 private:
-    explicit InspectorInputAgent(LocalFrame*);
+    explicit InspectorInputAgent(InspectorPageAgent*);
 
-    RawPtrWillBeMember<LocalFrame> m_inspectedFrame;
+    RawPtrWillBeMember<InspectorPageAgent> m_pageAgent;
 };