Rename to ChromiumTestShell package from testshell to shell

chrome/android/shell/res/layout/testshell_activity.xml

Index: chrome/android/shell/res/layout/testshell_activity.xml
diff --git a/chrome/android/testshell/res/layout/testshell_activity.xml b/chrome/android/shell/res/layout/testshell_activity.xml
similarity index 86%
rename from chrome/android/testshell/res/layout/testshell_activity.xml
rename to chrome/android/shell/res/layout/testshell_activity.xml
index 8e9fccae0f1ae63f5e3d890b001d06b476dd6073..0800a755bd379e50ae417084bfcd6ba6c865b53c 100644
--- a/chrome/android/testshell/res/layout/testshell_activity.xml
+++ b/chrome/android/shell/res/layout/testshell_activity.xml
@@ -6,12 +6,12 @@
      found in the LICENSE file.
  -->
 
-<org.chromium.chrome.testshell.TabManager android:id="@+id/tab_manager"
+<org.chromium.chrome.shell.TabManager android:id="@+id/tab_manager"
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="vertical">
-    <org.chromium.chrome.testshell.TestShellToolbar android:id="@+id/toolbar"
+    <org.chromium.chrome.shell.TestShellToolbar android:id="@+id/toolbar"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:orientation="horizontal"
@@ -35,11 +35,11 @@
             android:src="@drawable/menu_dots"
             android:background="?android:attr/selectableItemBackground"
             android:scaleType="center" />
-    </org.chromium.chrome.testshell.TestShellToolbar>
+    </org.chromium.chrome.shell.TestShellToolbar>
     <FrameLayout android:id="@+id/content_container"
         android:layout_width="match_parent"
         android:layout_height="0dp"
         android:layout_weight="1">
     </FrameLayout>
 
-</org.chromium.chrome.testshell.TabManager>
+</org.chromium.chrome.shell.TabManager>