Add a flag to disable partial raster in renderer

cc/trees/layer_tree_host_pixeltest_tiles.cc

 // Copyright 2015 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 "cc/layers/content_layer_client.h"
 #include "cc/layers/picture_layer.h"
 #include "cc/output/copy_output_request.h"
 #include "cc/playback/display_item_list.h"
 #include "cc/playback/display_item_list_settings.h"
 #include "cc/playback/drawing_display_item.h"
@@ skipping 14 matching lines @@
   BITMAP,
 };
 
 class LayerTreeHostTilesPixelTest : public LayerTreePixelTest {
  protected:
   void InitializeSettings(LayerTreeSettings* settings) override {
     LayerTreePixelTest::InitializeSettings(settings);
     switch (raster_mode_) {
       case PARTIAL_ONE_COPY:
         settings->use_zero_copy = false;
-        settings->use_persistent_map_for_gpu_memory_buffers = true;
+        settings->use_partial_raster = true;
         break;
       case FULL_ONE_COPY:
         settings->use_zero_copy = false;
-        settings->use_persistent_map_for_gpu_memory_buffers = false;
+        settings->use_partial_raster = false;
         break;
       case BITMAP:
-        // This is done via context creation. No settings to change here!
+        settings->use_partial_raster = true;
         break;
       case GPU:
         settings->gpu_rasterization_enabled = true;
         settings->gpu_rasterization_forced = true;
+        settings->use_partial_raster = true;
         break;
     }
   }
 
   void BeginTest() override {
     // Don't set up a readback target at the start of the test.
     PostSetNeedsCommitToMainThread();
   }
 
   void DoReadback() {
@@ skipping 139 matching lines @@
 }
 
 TEST_F(LayerTreeHostTilesTestPartialInvalidation,
        FullRaster_MultiThread_OneCopy) {
   RunRasterPixelTest(
       true, FULL_ONE_COPY, picture_layer_,
       base::FilePath(FILE_PATH_LITERAL("blue_yellow_flipped.png")));
 }
 
 TEST_F(LayerTreeHostTilesTestPartialInvalidation,
        PartialRaster_SingleThread_Software) {

[danakj, 2015/10/16 18:13:08]

Should we add non-partial versions of software and gpu tests? That might be the
simplest way to ensure we're not doing the wrong thing.

[ericrk, 2015/10/16 20:27:13]

good suggestion - done

   RunRasterPixelTest(
       false, BITMAP, picture_layer_,
       base::FilePath(FILE_PATH_LITERAL("blue_yellow_partial_flipped.png")));
 }
 
 TEST_F(LayerTreeHostTilesTestPartialInvalidation,
        PartialRaster_SingleThread_GpuRaster) {
   RunRasterPixelTest(
       false, GPU, picture_layer_,
       base::FilePath(FILE_PATH_LITERAL("blue_yellow_partial_flipped.png")));
 }
 
 }  // namespace
 }  // namespace cc
 
 #endif  // !defined(OS_ANDROID)