WebContentsObserver and TabObserver update for PlzNavigate

content/browser/android/web_contents_observer_proxy.h

Index: content/browser/android/web_contents_observer_proxy.h
diff --git a/content/browser/android/web_contents_observer_proxy.h b/content/browser/android/web_contents_observer_proxy.h
index e9545b2ce561a59e8084e9d4908577f8d8657b46..1fc84c6c968cb2b311b3156009f4980eedc54699 100644
--- a/content/browser/android/web_contents_observer_proxy.h
+++ b/content/browser/android/web_contents_observer_proxy.h
@@ -32,7 +32,6 @@ class WebContentsObserverProxy : public WebContentsObserver {
  private:
   void RenderViewReady() override;
   void RenderProcessGone(base::TerminationStatus termination_status) override;
-  void DidFinishNavigation(NavigationHandle* navigation_handle) override;
   void DidStartLoading() override;
   void DidStopLoading() override;
   void DidFailProvisionalLoad(RenderFrameHost* render_frame_host,
@@ -62,6 +61,10 @@ class WebContentsObserverProxy : public WebContentsObserver {
       RenderFrameHost* render_frame_host,
       const GURL& url,
       ui::PageTransition transition_type) override;
+
+  void DidStartNavigation(NavigationHandle* navigation_handle) override;
+  void DidFinishNavigation(NavigationHandle* navigation_handle) override;
+
   void DidFinishLoad(RenderFrameHost* render_frame_host,
                      const GURL& validated_url) override;
   void DocumentLoadedInFrame(RenderFrameHost* render_frame_host) override;