Support "learn more" link for EME in PermissionRequestManager code-path on Android

chrome/browser/ui/permission_bubble/mock_permission_prompt.cc

Index: chrome/browser/ui/permission_bubble/mock_permission_prompt.cc
diff --git a/chrome/browser/ui/permission_bubble/mock_permission_prompt.cc b/chrome/browser/ui/permission_bubble/mock_permission_prompt.cc
index 2618143e41f8bf3b7f10a5e75ccce78ab04c2a2e..87f38013015015a2db38d93a718eb8bab53ef764 100644
--- a/chrome/browser/ui/permission_bubble/mock_permission_prompt.cc
+++ b/chrome/browser/ui/permission_bubble/mock_permission_prompt.cc
@@ -8,6 +8,11 @@
 #include "base/run_loop.h"
 #include "chrome/browser/permissions/permission_request_manager.h"
 #include "chrome/browser/ui/permission_bubble/mock_permission_prompt_factory.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+#if !defined(OS_ANDROID)
+#include "ui/gfx/vector_icon_types.h"
+#endif
 
 MockPermissionPrompt::~MockPermissionPrompt() {
   Hide();
@@ -20,6 +25,14 @@ void MockPermissionPrompt::Show() {
   for (const PermissionRequest* request : manager_->requests_) {
     factory_->request_types_seen_.push_back(
         request->GetPermissionRequestType());
+    // The actual prompt will call these, so test they're sane.
+    EXPECT_FALSE(request->GetMessageTextFragment().empty());
+#if defined(OS_ANDROID)
+    EXPECT_FALSE(request->GetMessageText().empty());
+    EXPECT_NE(0, request->GetIconId());
+#else
+    EXPECT_FALSE(request->GetIconId().is_empty());
+#endif
   }
   factory_->UpdateResponseType();
   is_visible_ = true;