Introduce AutofillClient and use it to get rid of PasswordManager dependency.

chrome/browser/autofill/autofill_metrics_unittest.cc

Index: chrome/browser/autofill/autofill_metrics_unittest.cc
diff --git a/chrome/browser/autofill/autofill_metrics_unittest.cc b/chrome/browser/autofill/autofill_metrics_unittest.cc
index 1037c68ad5cb7720e02e9d5b62403aea5cf81630..e601030c1c314a3ce10ee8d2274076fbd25879a4 100644
--- a/chrome/browser/autofill/autofill_metrics_unittest.cc
+++ b/chrome/browser/autofill/autofill_metrics_unittest.cc
@@ -15,6 +15,7 @@
 #include "chrome/browser/autofill/autofill_metrics.h"
 #include "chrome/browser/autofill/personal_data_manager.h"
 #include "chrome/browser/autofill/personal_data_manager_factory.h"
+#include "chrome/browser/ui/autofill/tab_autofill_manager_delegate.h"
 #include "chrome/browser/ui/tab_contents/tab_contents.h"
 #include "chrome/browser/ui/tab_contents/test_tab_contents.h"
 #include "chrome/browser/webdata/web_data_service.h"
@@ -174,7 +175,8 @@ class TestAutofillManager : public AutofillManager {
  public:
   TestAutofillManager(TabContents* tab_contents,
                       TestPersonalDataManager* personal_manager)
-      : AutofillManager(tab_contents, personal_manager),
+      : AutofillManager(&autofill_delegate_, tab_contents, personal_manager),
+        autofill_delegate_(tab_contents),
         autofill_enabled_(true),
         did_finish_async_form_submit_(false),
         message_loop_is_running_(false) {
@@ -245,6 +247,8 @@ class TestAutofillManager : public AutofillManager {
   // AutofillManager is ref counted.
   virtual ~TestAutofillManager() {}
 
+  TabAutofillManagerDelegate autofill_delegate_;
+
   bool autofill_enabled_;
   bool did_finish_async_form_submit_;
   bool message_loop_is_running_;