[jumbo] Move two clashing RunPendingTasks() in blink tests

There is a ::blink::test::RunPendingTasks() but one test
imported it into ::blink with a using statement and another
test created its own ::blink::RunPendingTasks(). This cause
problems in some jumbo builds. This moves both RunPendingTasks
away from the blink namespace.

Change-Id: Ib811f27269305cc1ed2fa4019377e1a4b2e36d6e
Reviewed-on: https://chromium-review.googlesource.com/c/1386209
Reviewed-by: Fredrik Söderquist <fs@opera.com>
Commit-Queue: Daniel Bratell <bratell@opera.com>
Cr-Commit-Position: refs/heads/master@{#618167}
diff --git a/third_party/blink/renderer/core/display_lock/display_lock_context_test.cc b/third_party/blink/renderer/core/display_lock/display_lock_context_test.cc
index be55e698..ac8385db 100644
--- a/third_party/blink/renderer/core/display_lock/display_lock_context_test.cc
+++ b/third_party/blink/renderer/core/display_lock/display_lock_context_test.cc
@@ -14,13 +14,6 @@
 
 namespace blink {
 
-void RunPendingTasks() {
-  base::RunLoop run_loop;
-  Thread::Current()->GetTaskRunner()->PostTask(FROM_HERE,
-                                               run_loop.QuitWhenIdleClosure());
-  run_loop.Run();
-}
-
 class DisplayLockContextTest : public RenderingTest {
  public:
   void SetUp() override {
@@ -36,6 +29,13 @@
     }
   }
 
+  static void RunPendingTasks() {
+    base::RunLoop run_loop;
+    Thread::Current()->GetTaskRunner()->PostTask(
+        FROM_HERE, run_loop.QuitWhenIdleClosure());
+    run_loop.Run();
+  }
+
   DisplayLockContext::State ContextState(DisplayLockContext* context) const {
     return context->state_;
   }
diff --git a/third_party/blink/renderer/core/page/viewport_test.cc b/third_party/blink/renderer/core/page/viewport_test.cc
index ad676013..92591e2 100644
--- a/third_party/blink/renderer/core/page/viewport_test.cc
+++ b/third_party/blink/renderer/core/page/viewport_test.cc
@@ -58,8 +58,6 @@
 
 namespace blink {
 
-using blink::test::RunPendingTasks;
-
 class ViewportTest : public testing::Test {
  protected:
   ViewportTest()
@@ -85,7 +83,7 @@
 
   void ExecuteScript(WebLocalFrame* frame, const WebString& code) {
     frame->ExecuteScript(WebScriptSource(code));
-    RunPendingTasks();
+    blink::test::RunPendingTasks();
   }
 
   std::string base_url_;
@@ -3286,7 +3284,7 @@
     request.Complete(responseText);
 
     // Pump the task queue so the meta tag gets processed.
-    test::RunPendingTasks();
+    blink::test::RunPendingTasks();
   }
 
   HistogramTester histogram_tester_;