Adjust test expectations for infinite-size images.

components/test_runner/web_test_delegate.h

Index: components/test_runner/web_test_delegate.h
diff --git a/components/test_runner/web_test_delegate.h b/components/test_runner/web_test_delegate.h
index a258e3f4b6f08a19cb9e87bf8a9bcadb7a3eef36..db8c0869746d1f425a9fd99937c12e8647af5fbc 100644
--- a/components/test_runner/web_test_delegate.h
+++ b/components/test_runner/web_test_delegate.h
@@ -156,7 +156,8 @@ class WebTestDelegate {
                                             bool by_user) = 0;
 
   // Controls the device scale factor of the main WebView for hidpi tests.
-  virtual void SetDeviceScaleFactor(float factor) = 0;
+  // Returns whether or not the use-zoom-for-dsf flag is enabled.

[oshima, 2016/06/22 01:11:51]

TODO(oshima): Remove return value when all platforms migrate to
use-zoom-for-dsf.

[Bret, 2016/06/22 17:42:26]

Added in TestRunnerForSpecificView since that's the core thing that needs
deleting later.

+  virtual bool SetDeviceScaleFactor(float factor) = 0;

[oshima, 2016/06/22 01:11:51]

I have a slight preference to have a separate IsUsZoomForDSFEnabled(), but I'll
defer to mkswt@

[Bret, 2016/06/22 17:42:27]

I kinda like that better too, so I changed it.

 
   // Enable zoom-for-dsf option.
   virtual void EnableUseZoomForDSF() = 0;