Make RenderPass::Id an isolated class

cc/output/software_renderer_unittest.cc

Index: cc/output/software_renderer_unittest.cc
diff --git a/cc/output/software_renderer_unittest.cc b/cc/output/software_renderer_unittest.cc
index dfde701bc770de6330fb679c63b889554245e902..9a3ab7096bbc675ef60a8618c3f8b4816f4ce55d 100644
--- a/cc/output/software_renderer_unittest.cc
+++ b/cc/output/software_renderer_unittest.cc
@@ -100,7 +100,7 @@ TEST_F(SoftwareRendererTest, SolidColorQuad) {
 
   InitializeRenderer(make_scoped_ptr(new SoftwareOutputDevice));
 
-  RenderPass::Id root_render_pass_id = RenderPass::Id(1, 1);
+  RenderPassId root_render_pass_id = RenderPassId(1, 1);
   scoped_ptr<TestRenderPass> root_render_pass = TestRenderPass::Create();
   root_render_pass->SetNew(
       root_render_pass_id, outer_rect, outer_rect, gfx::Transform());
@@ -183,7 +183,7 @@ TEST_F(SoftwareRendererTest, TileQuad) {
 
   gfx::Rect root_rect = outer_rect;
 
-  RenderPass::Id root_render_pass_id = RenderPass::Id(1, 1);
+  RenderPassId root_render_pass_id = RenderPassId(1, 1);
   scoped_ptr<TestRenderPass> root_render_pass = TestRenderPass::Create();
   root_render_pass->SetNew(
       root_render_pass_id, root_rect, root_rect, gfx::Transform());
@@ -265,7 +265,7 @@ TEST_F(SoftwareRendererTest, TileQuadVisibleRect) {
 
   gfx::Rect root_rect(tile_size);
 
-  RenderPass::Id root_render_pass_id = RenderPass::Id(1, 1);
+  RenderPassId root_render_pass_id = RenderPassId(1, 1);
   scoped_ptr<TestRenderPass> root_render_pass = TestRenderPass::Create();
   root_render_pass->SetNew(
       root_render_pass_id, root_rect, root_rect, gfx::Transform());
@@ -331,7 +331,7 @@ TEST_F(SoftwareRendererTest, ShouldClearRootRenderPass) {
   RenderPassList list;
 
   // Draw a fullscreen green quad in a first frame.
-  RenderPass::Id root_clear_pass_id(1, 0);
+  RenderPassId root_clear_pass_id(1, 0);
   TestRenderPass* root_clear_pass = AddRenderPass(
       &list, root_clear_pass_id, device_viewport_rect, gfx::Transform());
   AddQuad(root_clear_pass, device_viewport_rect, SK_ColorGREEN);
@@ -354,7 +354,7 @@ TEST_F(SoftwareRendererTest, ShouldClearRootRenderPass) {
   // frame.
   gfx::Rect smaller_rect(20, 20, 60, 60);
 
-  RenderPass::Id root_smaller_pass_id(2, 0);
+  RenderPassId root_smaller_pass_id(2, 0);
   TestRenderPass* root_smaller_pass = AddRenderPass(
       &list, root_smaller_pass_id, device_viewport_rect, gfx::Transform());
   AddQuad(root_smaller_pass, smaller_rect, SK_ColorMAGENTA);
@@ -387,13 +387,13 @@ TEST_F(SoftwareRendererTest, RenderPassVisibleRect) {
 
   // Pass drawn as inner quad is magenta.
   gfx::Rect smaller_rect(20, 20, 60, 60);
-  RenderPass::Id smaller_pass_id(2, 1);
+  RenderPassId smaller_pass_id(2, 1);
   TestRenderPass* smaller_pass =
       AddRenderPass(&list, smaller_pass_id, smaller_rect, gfx::Transform());
   AddQuad(smaller_pass, smaller_rect, SK_ColorMAGENTA);
 
   // Root pass is green.
-  RenderPass::Id root_clear_pass_id(1, 0);
+  RenderPassId root_clear_pass_id(1, 0);
   TestRenderPass* root_clear_pass = AddRenderPass(
       &list, root_clear_pass_id, device_viewport_rect, gfx::Transform());
   AddRenderPassQuad(root_clear_pass, smaller_pass);