Remove iOS ifdefs in src/content.

content/browser/renderer_host/render_widget_host_view_browsertest.cc

Index: content/browser/renderer_host/render_widget_host_view_browsertest.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_browsertest.cc b/content/browser/renderer_host/render_widget_host_view_browsertest.cc
index d7f79a0b573ea87046222d974ba98dd76bf55af1..d1f1fbae2d0f06d786d0df255cf84682d6c1b911 100644
--- a/content/browser/renderer_host/render_widget_host_view_browsertest.cc
+++ b/content/browser/renderer_host/render_widget_host_view_browsertest.cc
@@ -276,9 +276,8 @@ class FakeFrameSubscriber : public RenderWidgetHostViewFrameSubscriber {
   DeliverFrameCallback callback_;
 };
 
-// Disable tests for Android and IOS as these platforms have incomplete
-// implementation.
-#if !defined(OS_ANDROID) && !defined(OS_IOS)
+// Disable tests for Android as it has an incomplete implementation.
+#if !defined(OS_ANDROID)
 
 // The CopyFromBackingStore() API should work on all platforms when compositing
 // is enabled.
@@ -1005,7 +1004,7 @@ INSTANTIATE_TEST_CASE_P(
     CompositingRenderWidgetHostViewBrowserTestTabCaptureHighDPI,
     kTestCompositingModes);
 
-#endif  // !defined(OS_ANDROID) && !defined(OS_IOS)
+#endif  // !defined(OS_ANDROID)
 
 }  // namespace
 }  // namespace content