Move more standalone files from web/ to core/exported/.

third_party/WebKit/public/web/WebPageImportanceSignals.h

Index: third_party/WebKit/public/web/WebPageImportanceSignals.h
diff --git a/third_party/WebKit/public/web/WebPageImportanceSignals.h b/third_party/WebKit/public/web/WebPageImportanceSignals.h
index e9aab4b543e44a5f236b21f141118738098a3a4c..f1983b94742a590cdef3a06c410b00003b1ed7df 100644
--- a/third_party/WebKit/public/web/WebPageImportanceSignals.h
+++ b/third_party/WebKit/public/web/WebPageImportanceSignals.h
@@ -19,15 +19,15 @@ class WebPageImportanceSignals {
   WebPageImportanceSignals() { Reset(); }
 
   bool HadFormInteraction() const { return had_form_interaction_; }
-  void SetHadFormInteraction();
+  BLINK_EXPORT void SetHadFormInteraction();
   bool IssuedNonGetFetchFromScript() const {
     return issued_non_get_fetch_from_script_;
   }
-  void SetIssuedNonGetFetchFromScript();
+  BLINK_EXPORT void SetIssuedNonGetFetchFromScript();
 
   BLINK_EXPORT void Reset();
 #if BLINK_IMPLEMENTATION
-  void OnCommitLoad();
+  BLINK_EXPORT void OnCommitLoad();
 #endif
 
   void SetObserver(WebViewClient* observer) { observer_ = observer; }