Define a --force-gpu-rasterization flag

This flag forces gpu rasterization for all layers (that is, it behaves the
way --enable-gpu-rasterization behaved previously).

--enable-gpu-rasterization now enables gpu rasterization only on layers
that have a GPU rasterization hint. Since this hint will be added in a
later CL, this flag is currently a no-op.

BUG=329722

Review URL: https://codereview.chromium.org/189883009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@256143 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 9 insertions, 9 deletions

diff --git a/webkit/renderer/compositor_bindings/web_layer_impl.cc b/webkit/renderer/compositor_bindings/web_layer_impl.cc
index 0cac5f9..5f76315 100644
--- a/webkit/renderer/compositor_bindings/web_layer_impl.cc
+++ b/webkit/renderer/compositor_bindings/web_layer_impl.cc
@@ -41,14 +41,7 @@ using blink::WebFilterOperations;
 namespace webkit {
 namespace {
 
-struct ImplSidePaintingStatus {
-  ImplSidePaintingStatus()
-      : enabled(cc::switches::IsImplSidePaintingEnabled()) {
-  }
-  bool enabled;
-};
-base::LazyInstance<ImplSidePaintingStatus> g_impl_side_painting_status =
-    LAZY_INSTANCE_INITIALIZER;
+bool g_impl_side_painting_enabled = false;
 
 }  // namespace
 
@@ -70,7 +63,12 @@ WebLayerImpl::~WebLayerImpl() {
 
 // static
 bool WebLayerImpl::UsingPictureLayer() {
-  return g_impl_side_painting_status.Get().enabled;
+  return g_impl_side_painting_enabled;
+}
+
+// static
+void WebLayerImpl::SetImplSidePaintingEnabled(bool enabled) {
+  g_impl_side_painting_enabled = enabled;
 }
 
 int WebLayerImpl::id() const { return layer_->id(); }
diff --git a/webkit/renderer/compositor_bindings/web_layer_impl.h b/webkit/renderer/compositor_bindings/web_layer_impl.h
index 93c6125..dbcca1e 100644
--- a/webkit/renderer/compositor_bindings/web_layer_impl.h
+++ b/webkit/renderer/compositor_bindings/web_layer_impl.h
@@ -52,6 +52,8 @@ class WebLayerImpl : public blink::WebLayer, public cc::LayerClient {
   virtual ~WebLayerImpl();
 
   static bool UsingPictureLayer();
+  WEBKIT_COMPOSITOR_BINDINGS_EXPORT static void SetImplSidePaintingEnabled(
+      bool enabled);
 
   WEBKIT_COMPOSITOR_BINDINGS_EXPORT cc::Layer* layer() const;