Remove create/delete methods from WebGraphicsContext3D.

third_party/WebKit/Source/platform/graphics/gpu/DrawingBufferTest.cpp

Index: third_party/WebKit/Source/platform/graphics/gpu/DrawingBufferTest.cpp
diff --git a/third_party/WebKit/Source/platform/graphics/gpu/DrawingBufferTest.cpp b/third_party/WebKit/Source/platform/graphics/gpu/DrawingBufferTest.cpp
index 11bfcbedb60e5b0a1e361185a2bf4fd7661efbbf..64d690f7a565e5e40b704c2251a1111af42f0240 100644
--- a/third_party/WebKit/Source/platform/graphics/gpu/DrawingBufferTest.cpp
+++ b/third_party/WebKit/Source/platform/graphics/gpu/DrawingBufferTest.cpp
@@ -619,11 +619,19 @@ public:
         }
     }
 
+    void GenRenderbuffers(GLsizei n, GLuint* renderbuffers) override
+    {
+        for (GLsizei i = 0; i < n; ++i)
+            renderbuffers[i] = m_nextGenRenderbufferId++;
+    }
+
     uint32_t stencilAttachment() const { return m_stencilAttachment; }
     uint32_t depthAttachment() const { return m_depthAttachment; }
     uint32_t depthStencilAttachment() const { return m_depthStencilAttachment; }
+    size_t numAllocatedRenderBuffer() const { return m_nextGenRenderbufferId - 1; }
 
 private:
+    uint32_t m_nextGenRenderbufferId = 1;
     uint32_t m_depthAttachment = 0;
     uint32_t m_stencilAttachment = 0;
     uint32_t m_depthStencilAttachment = 0;
@@ -631,10 +639,9 @@ private:
 
 class DepthStencilTrackingContext : public MockWebGraphicsContext3D {
 public:
-    DepthStencilTrackingContext() : m_nextRenderBufferId(1) {}
     ~DepthStencilTrackingContext() override {}
 
-    int numAllocatedRenderBuffer() const { return m_nextRenderBufferId - 1; }
+    size_t numAllocatedRenderBuffer() const { return m_contextGL.numAllocatedRenderBuffer(); }
     WebGLId stencilAttachment() const { return m_contextGL.stencilAttachment(); }
     WebGLId depthAttachment() const { return m_contextGL.depthAttachment(); }
     WebGLId depthStencilAttachment() const { return m_contextGL.depthStencilAttachment(); }
@@ -647,15 +654,9 @@ public:
         return WebString();
     }
 
-    WebGLId createRenderbuffer() override
-    {
-        return ++m_nextRenderBufferId;
-    }
-
     gpu::gles2::GLES2Interface* getGLES2Interface() override { return &m_contextGL; }
 
 private:
-    WebGLId m_nextRenderBufferId;
     DepthStencilTrackingGLES2Interface m_contextGL;
 };
 
@@ -668,7 +669,7 @@ struct DepthStencilTestCase {
 
     bool requestStencil;
     bool requestDepth;
-    int expectedRenderBuffers;
+    size_t expectedRenderBuffers;
     const char* const testCaseName;
 };