Remove duplicate 'Browser' in Browser creation functions.

|Browser* GetOrCreateBrowser()| is renamed to |GetOrCreate|.
|Browser::BrowserCreationStatus| is renamed to |Browser::CreationStatus|
|Browser::GetBrowserCreationStatus()| is renamed to
  |Browser::GetCreationStatus()|.

This CL does not change any behavior.

Bug: 1162794
Change-Id: I14ce77c85153f746e1d1e70fcb66f5e83beb62ea
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2617779
Reviewed-by: David Roger <[email protected]>
Reviewed-by: Peter Kasting <[email protected]>
Commit-Queue: Ramin Halavati <[email protected]>
Cr-Commit-Position: refs/heads/master@{#842005}
diff --git a/chrome/browser/ui/browser_navigator_browsertest_chromeos.cc b/chrome/browser/ui/browser_navigator_browsertest_chromeos.cc
index 18c1ce2..a3216802 100644
--- a/chrome/browser/ui/browser_navigator_browsertest_chromeos.cc
+++ b/chrome/browser/ui/browser_navigator_browsertest_chromeos.cc
@@ -86,8 +86,8 @@
 IN_PROC_BROWSER_TEST_F(BrowserNavigatorTestChromeOS, RestrictSigninProfile) {
   EXPECT_EQ(chrome::GetTotalBrowserCount(), 1u);
 
-  EXPECT_EQ(Browser::BrowserCreationStatus::kErrorProfileUnsuitable,
-            Browser::GetBrowserCreationStatusForProfile(
+  EXPECT_EQ(Browser::CreationStatus::kErrorProfileUnsuitable,
+            Browser::GetCreationStatusForProfile(
                 chromeos::ProfileHelper::GetSigninProfile()));
 }