Replace deprecated getLastUsedProfile function in WebContentsFactory.

|Profile#getLastUsedProfile| is depreciated and replaced with
|Profile#getLastUsedRegularProfile|. This CL updates WebContentsFactory
class.

Note: This change is only code clean-up, does not change any behavior.

Bug: 1041781
Change-Id: I78995577933aba3cf06e3720ae5ccd0d7b77851f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2069322Reviewed-by: Ramin Halavati <rhalavati@chromium.org>
Reviewed-by: Boris Sazonov <bsazonov@chromium.org>
Commit-Queue: Side YILMAZ <sideyilmaz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#744584}

chrome/android/java/src/org/chromium/chrome/browser/WebContentsFactory.java

@@ -30,7 +30,7 @@ public class WebContentsFactory {
     // TODO(pshmakov): remove static for unit-testability.
     public static WebContents createWebContents(boolean incognito, boolean initiallyHidden) {
         return WebContentsFactoryJni.get().createWebContents(
-                Profile.getLastUsedProfile(), incognito, initiallyHidden, false);
+                Profile.getLastUsedRegularProfile(), incognito, initiallyHidden, false);
     }
 
     /**
@@ -46,7 +46,7 @@ public class WebContentsFactory {
     public WebContents createWebContentsWithWarmRenderer(
             boolean incognito, boolean initiallyHidden) {
         return WebContentsFactoryJni.get().createWebContents(
-                Profile.getLastUsedProfile(), incognito, initiallyHidden, true);
+                Profile.getLastUsedRegularProfile(), incognito, initiallyHidden, true);
     }
 
     @NativeMethods