Make RenderPass::Id an isolated class

cc/surfaces/surfaces_pixeltest.cc

Index: cc/surfaces/surfaces_pixeltest.cc
diff --git a/cc/surfaces/surfaces_pixeltest.cc b/cc/surfaces/surfaces_pixeltest.cc
index bd9f56c7556c309ce63329ca6017f78665b80ef6..a30f017247bf0f4ca4fded7e7f35ee20098a6398 100644
--- a/cc/surfaces/surfaces_pixeltest.cc
+++ b/cc/surfaces/surfaces_pixeltest.cc
@@ -63,7 +63,7 @@ SharedQuadState* CreateAndAppendTestSharedQuadState(
 // Draws a very simple frame with no surface references.
 TEST_F(SurfacesPixelTest, DrawSimpleFrame) {
   gfx::Rect rect(device_viewport_size_);
-  RenderPass::Id id(1, 1);
+  RenderPassId id(1, 1);
   scoped_ptr<RenderPass> pass = RenderPass::Create();
   pass->SetNew(id, rect, rect, gfx::Transform());
 
@@ -113,7 +113,7 @@ TEST_F(SurfacesPixelTest, DrawSimpleAggregatedFrame) {
   factory_.Create(root_surface_id, device_viewport_size_);
   {
     gfx::Rect rect(device_viewport_size_);
-    RenderPass::Id id(1, 1);
+    RenderPassId id(1, 1);
     scoped_ptr<RenderPass> pass = RenderPass::Create();
     pass->SetNew(id, rect, rect, gfx::Transform());
 
@@ -147,7 +147,7 @@ TEST_F(SurfacesPixelTest, DrawSimpleAggregatedFrame) {
 
   {
     gfx::Rect rect(child_size);
-    RenderPass::Id id(1, 1);
+    RenderPassId id(1, 1);
     scoped_ptr<RenderPass> pass = RenderPass::Create();
     pass->SetNew(id, rect, rect, gfx::Transform());
 
@@ -208,7 +208,7 @@ TEST_F(SurfacesPixelTest, DrawAggregatedFrameWithSurfaceTransforms) {
 
   {
     gfx::Rect rect(device_viewport_size_);
-    RenderPass::Id id(1, 1);
+    RenderPassId id(1, 1);
     scoped_ptr<RenderPass> pass = RenderPass::Create();
     pass->SetNew(id, rect, rect, gfx::Transform());
 
@@ -245,7 +245,7 @@ TEST_F(SurfacesPixelTest, DrawAggregatedFrameWithSurfaceTransforms) {
 
   {
     gfx::Rect rect(child_size);
-    RenderPass::Id id(1, 1);
+    RenderPassId id(1, 1);
     scoped_ptr<RenderPass> pass = RenderPass::Create();
     pass->SetNew(id, rect, rect, gfx::Transform());
 
@@ -280,7 +280,7 @@ TEST_F(SurfacesPixelTest, DrawAggregatedFrameWithSurfaceTransforms) {
 
   {
     gfx::Rect rect(child_size);
-    RenderPass::Id id(1, 1);
+    RenderPassId id(1, 1);
     scoped_ptr<RenderPass> pass = RenderPass::Create();
     pass->SetNew(id, rect, rect, gfx::Transform());