Add new gpu driver bug workaround DISABLE_TRANSPARENT_VISUALS

content/test/gpu/page_sets/gpu_process_tests.py

Index: content/test/gpu/page_sets/gpu_process_tests.py
diff --git a/content/test/gpu/page_sets/gpu_process_tests.py b/content/test/gpu/page_sets/gpu_process_tests.py
index ed9301470940b2ed682f827ddc9fafc713aa5fd1..f147cba94f403cf67e7c6baa42daf5d73e4c4548 100644
--- a/content/test/gpu/page_sets/gpu_process_tests.py
+++ b/content/test/gpu/page_sets/gpu_process_tests.py
@@ -522,6 +522,54 @@ class EqualBugWorkaroundsInBrowserAndGpuProcessPage(gpu_test_base.PageBase):
         (browser_list, gpu_list, list(diff)))
 
 
+class HasTransparentVisualsShared(GpuProcessSharedPageState):
+  def __init__(self, test, finder_options, story_set):
+    super(HasTransparentVisualsShared, self).__init__(
+      test, finder_options, story_set)
+    options = finder_options.browser_options
+    if sys.platform.startswith('linux'):
+      # Hit id 173 from kGpuDriverBugListJson.
+      options.AppendExtraBrowserArgs('--gpu-testing-gl-version=3.0 Mesa ' \
+                                     '12.1')
+
+class HasTransparentVisualsGpuProcessPage(DriverBugWorkaroundsTestsPage):
+  def __init__(self, story_set, expectations):
+    super(HasTransparentVisualsGpuProcessPage, self).__init__(
+      name='GpuProcess.has_transparent_visuals_gpu_process',
+      page_set=story_set,
+      shared_page_state_class=HasTransparentVisualsShared,
+      expectations=expectations,
+      expected_workaround=None,
+      unexpected_workaround='disable_transparent_visuals')
+
+  def Validate(self, tab, results):
+    if sys.platform.startswith('linux'):
+      super(HasTransparentVisualsGpuProcessPage, self).Validate(tab, results)
+
+
+class NoTransparentVisualsShared(GpuProcessSharedPageState):
+  def __init__(self, test, finder_options, story_set):
+    super(NoTransparentVisualsShared, self).__init__(
+      test, finder_options, story_set)
+    options = finder_options.browser_options
+    if sys.platform.startswith('linux'):
+      options.AppendExtraBrowserArgs('--disable_transparent_visuals=1')
+
+class NoTransparentVisualsGpuProcessPage(DriverBugWorkaroundsTestsPage):
+  def __init__(self, story_set, expectations):
+    super(NoTransparentVisualsGpuProcessPage, self).__init__(
+      name='GpuProcess.no_transparent_visuals_gpu_process',
+      page_set=story_set,
+      shared_page_state_class=NoTransparentVisualsShared,
+      expectations=expectations,
+      expected_workaround='disable_transparent_visuals',
+      unexpected_workaround=None)
+
+  def Validate(self, tab, results):
+    if sys.platform.startswith('linux'):
+      super(NoTransparentVisualsGpuProcessPage, self).Validate(tab, results)
+
+
 class GpuProcessTestsStorySet(story_set_module.StorySet):
 
   """ Tests that accelerated content triggers the creation of a GPU process """
@@ -546,8 +594,6 @@ class GpuProcessTestsStorySet(story_set_module.StorySet):
     self.AddStory(GpuInfoCompletePage(self, expectations))
     self.AddStory(NoGpuProcessPage(self, expectations))
     self.AddStory(SoftwareGpuProcessPage(self, expectations))
-    if not is_platform_android:
-      self.AddStory(SkipGpuProcessPage(self, expectations))
     self.AddStory(DriverBugWorkaroundsInGpuProcessPage(self, expectations))
     self.AddStory(IdentifyActiveGpuPage1(self, expectations))
     self.AddStory(IdentifyActiveGpuPage2(self, expectations))
@@ -557,6 +603,10 @@ class GpuProcessTestsStorySet(story_set_module.StorySet):
     self.AddStory(DriverBugWorkaroundsUponGLRendererPage(self, expectations))
     self.AddStory(EqualBugWorkaroundsInBrowserAndGpuProcessPage(self,
                                                                 expectations))
+    if not is_platform_android:
+      self.AddStory(SkipGpuProcessPage(self, expectations))
+      self.AddStory(HasTransparentVisualsGpuProcessPage(self, expectations))
+      self.AddStory(NoTransparentVisualsGpuProcessPage(self, expectations))
 
   @property
   def allow_mixed_story_states(self):