Add the DelegatingRenderer class with its initialize path.

cc/gl_renderer_unittest.cc

Index: cc/gl_renderer_unittest.cc
diff --git a/cc/gl_renderer_unittest.cc b/cc/gl_renderer_unittest.cc
index 1ed21b0d788a03911e89b664423d74c1a57295f2..a2ae5d56629deb58fc8fd8f4a1579eac1f9471b3 100644
--- a/cc/gl_renderer_unittest.cc
+++ b/cc/gl_renderer_unittest.cc
@@ -126,7 +126,7 @@ protected:
 
     virtual void SetUp()
     {
-        m_renderer.initialize();
+        m_renderer.initialize(m_resourceProvider.get());
     }
 
     void swapBuffers()
@@ -304,7 +304,7 @@ TEST(GLRendererTest2, initializationDoesNotMakeSynchronousCalls)
     scoped_ptr<ResourceProvider> resourceProvider(ResourceProvider::create(context.get()));
     FakeRendererGL renderer(&mockClient, resourceProvider.get());
 
-    EXPECT_TRUE(renderer.initialize());
+    EXPECT_TRUE(renderer.initialize(resourceProvider.get()));
 }
 
 class LoseContextOnFirstGetContext : public FakeWebGraphicsContext3D {
@@ -347,7 +347,7 @@ TEST(GLRendererTest2, initializationWithQuicklyLostContextDoesNotAssert)
     scoped_ptr<ResourceProvider> resourceProvider(ResourceProvider::create(context.get()));
     FakeRendererGL renderer(&mockClient, resourceProvider.get());
 
-    renderer.initialize();
+    renderer.initialize(resourceProvider.get());
 }
 
 class ContextThatDoesNotSupportMemoryManagmentExtensions : public FakeWebGraphicsContext3D {
@@ -369,7 +369,7 @@ TEST(GLRendererTest2, initializationWithoutGpuMemoryManagerExtensionSupportShoul
     scoped_ptr<ResourceProvider> resourceProvider(ResourceProvider::create(outputSurface.get()));
     FakeRendererGL renderer(&mockClient, resourceProvider.get());
 
-    renderer.initialize();
+    renderer.initialize(resourceProvider.get());
 
     EXPECT_GT(mockClient.memoryAllocationLimitBytes(), 0ul);
 }
@@ -399,7 +399,7 @@ TEST(GLRendererTest2, opaqueBackground)
 
     mockClient.rootRenderPass()->has_transparent_background = false;
 
-    EXPECT_TRUE(renderer.initialize());
+    EXPECT_TRUE(renderer.initialize(resourceProvider.get()));
 
     renderer.drawFrame(mockClient.renderPassesInDrawOrder(), mockClient.renderPasses());
 
@@ -422,7 +422,7 @@ TEST(GLRendererTest2, transparentBackground)
 
     mockClient.rootRenderPass()->has_transparent_background = true;
 
-    EXPECT_TRUE(renderer.initialize());
+    EXPECT_TRUE(renderer.initialize(resourceProvider.get()));
 
     renderer.drawFrame(mockClient.renderPassesInDrawOrder(), mockClient.renderPasses());
 
@@ -471,7 +471,7 @@ TEST(GLRendererTest2, visibilityChangeIsLastCall)
     scoped_ptr<ResourceProvider> resourceProvider(ResourceProvider::create(outputSurface.get()));
     FakeRendererGL renderer(&mockClient, resourceProvider.get());
 
-    EXPECT_TRUE(renderer.initialize());
+    EXPECT_TRUE(renderer.initialize(resourceProvider.get()));
 
     bool lastCallWasSetVisiblity = false;
     // Ensure that the call to setVisibilityCHROMIUM is the last call issue to the GPU
@@ -525,7 +525,7 @@ TEST(GLRendererTest2, activeTextureState)
 
     // During initialization we are allowed to set any texture parameters.
     EXPECT_CALL(*context, texParameteri(_, _, _)).Times(AnyNumber());
-    EXPECT_TRUE(renderer.initialize());
+    EXPECT_TRUE(renderer.initialize(resourceProvider.get()));
 
     cc::RenderPass::Id id(1, 1);
     scoped_ptr<TestRenderPass> pass = TestRenderPass::Create();