Add a flag to disable partial raster in renderer

content/test/fake_compositor_dependencies.cc

Index: content/test/fake_compositor_dependencies.cc
diff --git a/content/test/fake_compositor_dependencies.cc b/content/test/fake_compositor_dependencies.cc
index 70e96cff22d30c147793d63ca8bb9cc6c66f0a7f..3cd5043c2cf7eafa71c4c27e40f3a0dbde26eb6a 100644
--- a/content/test/fake_compositor_dependencies.cc
+++ b/content/test/fake_compositor_dependencies.cc
@@ -42,7 +42,7 @@ bool FakeCompositorDependencies::IsZeroCopyEnabled() {
   return true;
 }
 
-bool FakeCompositorDependencies::IsPersistentGpuMemoryBufferEnabled() {
+bool FakeCompositorDependencies::IsPartialRasterEnabled() {
   return false;
 }