Enable consistent identity on android platform by default.

components/signin/core/common/profile_management_switches.h

Index: components/signin/core/common/profile_management_switches.h
diff --git a/components/signin/core/common/profile_management_switches.h b/components/signin/core/common/profile_management_switches.h
index 28d40603d844410a0dd90bf2cfd05601e218b172..b1289aa2126c10fd55231b56d92ca6b9b741c69f 100644
--- a/components/signin/core/common/profile_management_switches.h
+++ b/components/signin/core/common/profile_management_switches.h
@@ -9,6 +9,10 @@
 #ifndef CHROME_COMMON_PROFILE_MANAGEMENT_SWITCHES_H_
 #define CHROME_COMMON_PROFILE_MANAGEMENT_SWITCHES_H_
 
+namespace base {
+class CommandLine;
+}
+
 namespace switches {
 
 // Checks whether account consistency is enabled.
@@ -37,6 +41,10 @@ bool IsNewProfileManagement();
 // Whether the new profile management preview has been enabled.
 bool IsNewProfileManagementPreviewEnabled();
 
+// Called in tests to force enabling different modes.
+void EnableNewProfileManagementForTesting(base::CommandLine* command_line);
+void EnableAccountConsistencyForTesting(base::CommandLine* command_line);
+
 }  // namespace switches
 
 #endif  // CHROME_COMMON_PROFILE_MANAGEMENT_SWITCHES_H_