Add alpha argument to glResizeCHROMIUM

cc/test/test_gles2_interface.h

Index: cc/test/test_gles2_interface.h
diff --git a/cc/test/test_gles2_interface.h b/cc/test/test_gles2_interface.h
index 20ab0079156f7a0f4b1124fa67c1e009126a8f3d..09148106adb96a12177b0d998edecb4e35c8a054 100644
--- a/cc/test/test_gles2_interface.h
+++ b/cc/test/test_gles2_interface.h
@@ -157,7 +157,10 @@ class TestGLES2Interface : public gpu::gles2::GLES2InterfaceStub {
   GLuint CreateAndConsumeTextureCHROMIUM(GLenum target,
                                          const GLbyte* mailbox) override;
 
-  void ResizeCHROMIUM(GLuint width, GLuint height, float device_scale) override;
+  void ResizeCHROMIUM(GLuint width,
+                      GLuint height,
+                      float device_scale,
+                      GLboolean has_alpha) override;
   void LoseContextCHROMIUM(GLenum current, GLenum other) override;
   GLenum GetGraphicsResetStatusKHR() override;