[Password Generation] Update UI to match final mocks.

components/autofill/content/common/autofill_messages.h

Index: components/autofill/content/common/autofill_messages.h
diff --git a/components/autofill/content/common/autofill_messages.h b/components/autofill/content/common/autofill_messages.h
index 2e6e9603809e482c7be7c930c2ad8693a6c74cf1..54fd2504ec49f68737bde52d06e8a99fdd982c4e 100644
--- a/components/autofill/content/common/autofill_messages.h
+++ b/components/autofill/content/common/autofill_messages.h
@@ -232,14 +232,22 @@ IPC_MESSAGE_ROUTED0(AutofillHostMsg_DidEndTextFieldEditing)
 // Instructs the browser to hide the Autofill UI.
 IPC_MESSAGE_ROUTED0(AutofillHostMsg_HideAutofillUI)
 
-// Instructs the browser to show the password generation bubble at the
+// Instructs the browser to show the password generation popup at the
 // specified location. This location should be specified in the renderers
 // coordinate system. Form is the form associated with the password field.
 IPC_MESSAGE_ROUTED3(AutofillHostMsg_ShowPasswordGenerationPopup,
-                    gfx::Rect /* source location */,
+                    gfx::RectF /* source location */,
                     int /* max length of the password */,
                     autofill::PasswordForm)
 
+// Instructs the browser to show the popup for editing a generated password.
+// The location should be specified in the renderers coordinate system.
+IPC_MESSAGE_ROUTED1(AutofillHostMsg_ShowPasswordEditingPopup,
+                    gfx::RectF /* source location */)
+
+// Instructs the browser to hide any password generation popups.
+IPC_MESSAGE_ROUTED0(AutofillHostMsg_HidePasswordGenerationPopup)
+
 // Instruct the browser that a password mapping has been found for a field.
 IPC_MESSAGE_ROUTED2(AutofillHostMsg_AddPasswordFormMapping,
                     autofill::FormFieldData, /* the user name field */