cc: Make MaskOfLayerWithBackgroundFilter even smaller

cc/trees/layer_tree_host_pixeltest_masks.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "build/build_config.h"
 #include "cc/layers/content_layer_client.h"
 #include "cc/layers/picture_image_layer.h"
 #include "cc/layers/picture_layer.h"
 #include "cc/layers/solid_color_layer.h"
 #include "cc/test/layer_tree_pixel_resource_test.h"
@@ skipping 347 matching lines @@
         GL_ONE_COPY_RECT_STAGING_2D_DRAW,
         GL_ONE_COPY_EXTERNAL_STAGING_2D_DRAW,
         GL_ZERO_COPY_2D_DRAW,
         GL_ZERO_COPY_RECT_DRAW,
         GL_ZERO_COPY_EXTERNAL_DRAW,
         GL_ASYNC_UPLOAD_2D_DRAW));
 
 TEST_P(LayerTreeHostMasksForBackgroundFiltersPixelTest,
        MaskOfLayerWithBackgroundFilter) {
   scoped_refptr<SolidColorLayer> background = CreateSolidColorLayer(
-      gfx::Rect(128, 128), SK_ColorWHITE);
+      gfx::Rect(100, 100), SK_ColorWHITE);
 
-  gfx::Size picture_bounds(128, 128);
+  gfx::Size picture_bounds(100, 100);
   CheckerContentLayerClient picture_client(picture_bounds, SK_ColorGREEN, true);
   scoped_refptr<PictureLayer> picture = PictureLayer::Create(&picture_client);
   picture->SetBounds(picture_bounds);
   picture->SetIsDrawable(true);
 
   scoped_refptr<SolidColorLayer> blur = CreateSolidColorLayer(
-      gfx::Rect(128, 128), SK_ColorTRANSPARENT);
+      gfx::Rect(100, 100), SK_ColorTRANSPARENT);
   background->AddChild(picture);
   background->AddChild(blur);
 
   FilterOperations filters;
-  filters.Append(FilterOperation::CreateBlurFilter(2.f));
+  filters.Append(FilterOperation::CreateBlurFilter(1.5f));
   blur->SetBackgroundFilters(filters);
 
-  gfx::Size mask_bounds(128, 128);
+  gfx::Size mask_bounds(100, 100);
   CircleContentLayerClient mask_client(mask_bounds);
   scoped_refptr<PictureLayer> mask = PictureLayer::Create(&mask_client);
   mask->SetBounds(mask_bounds);
   mask->SetIsDrawable(true);
   mask->SetIsMask(true);
   blur->SetMaskLayer(mask.get());
 
-  float percentage_pixels_large_error = 2.5f;  // 2.5%, ~400px / (128*128)
+  float percentage_pixels_large_error = 2.5f;  // 2.5%, ~250px / (100*100)
   float percentage_pixels_small_error = 0.0f;
   float average_error_allowed_in_bad_pixels = 100.0f;
   int large_error_allowed = 256;
   int small_error_allowed = 0;
   pixel_comparator_.reset(new FuzzyPixelComparator(
       true,  // discard_alpha
       percentage_pixels_large_error,
       percentage_pixels_small_error,
       average_error_allowed_in_bad_pixels,
       large_error_allowed,
@@ skipping 52 matching lines @@
 
   RunPixelResourceTest(background,
                        base::FilePath(
                            FILE_PATH_LITERAL("mask_of_layer_with_blend.png")));
 }
 
 }  // namespace
 }  // namespace cc
 
 #endif  // !defined(OS_ANDROID)