[Merge M73] Component name is not actually package dependent

So don't use package, and just hard code the string. It's actually an
activity-alias, I believe.

TBR: tedchoc@chromium.org
Change-Id: Ib75fc55fbcbf3ea3ba674c2ac7940bfeff21dcb4
Reviewed-on: https://chromium-review.googlesource.com/c/1449091
Reviewed-by: Bo <boliu@chromium.org>
Commit-Queue: Bo <boliu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#628148}
(cherry picked from commit 5818ec67838f174d9ef50fa6cd3dc24e4dd57af2)

Merge approved by benmason on chat
TBR: benmason@chromium.org

Change-Id: I3c0281f727f0b4ff2892baad901747cf10fd8c8e
Reviewed-on: https://chromium-review.googlesource.com/c/1450297
Reviewed-by: Bo <boliu@chromium.org>
Cr-Commit-Position: refs/branch-heads/3683@{#121}
Cr-Branched-From: e51029943e0a38dd794b73caaf6373d5496ae783-refs/heads/master@{#625896}
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ChromeTabbedActivity.java b/chrome/android/java/src/org/chromium/chrome/browser/ChromeTabbedActivity.java
index 1ab4aa1..1ec694c 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/ChromeTabbedActivity.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/ChromeTabbedActivity.java
@@ -370,14 +370,15 @@
     }
 
     /**
-     * Return whether the passed in class name matches any of the supported tabbed mode activities.
+     * Return whether the passed in component name matches any of the supported tabbed mode
+     * activities.
      */
     public static boolean isTabbedModeComponentName(String componentName) {
         return TextUtils.equals(componentName, ChromeTabbedActivity.class.getName())
                 || TextUtils.equals(
                         componentName, MultiInstanceChromeTabbedActivity.class.getName())
                 || TextUtils.equals(componentName, ChromeTabbedActivity2.class.getName())
-                || TextUtils.equals(componentName, BuildInfo.getInstance().packageName + ".Main");
+                || TextUtils.equals(componentName, "com.google.android.apps.chrome.Main");
     }
 
     /**