Added switch to disable specified GL extensions.

ui/gl/gl_gl_api_implementation.h

Index: ui/gl/gl_gl_api_implementation.h
diff --git a/ui/gl/gl_gl_api_implementation.h b/ui/gl/gl_gl_api_implementation.h
index d4086006b6b51babf299646b6c7594d2fb06ccef..170e10bbd1f7af2cf9f57b198068be4b02d3d8a9 100644
--- a/ui/gl/gl_gl_api_implementation.h
+++ b/ui/gl/gl_gl_api_implementation.h
@@ -5,10 +5,15 @@
 #ifndef UI_GL_GL_GL_API_IMPLEMENTATION_H_
 #define UI_GL_GL_GL_API_IMPLEMENTATION_H_
 
+#include <vector>
+
 #include "base/compiler_specific.h"
 #include "ui/gl/gl_bindings.h"
 #include "ui/gl/gl_export.h"
 
+namespace base {
+  class CommandLine;

[no sievers, 2015/04/30 23:49:05]

nit: no indent

[David Yen, 2015/05/01 21:20:38]

Done.

+}
 namespace gpu {
 namespace gles2 {
 class GLES2Decoder;
@@ -53,11 +58,21 @@ class RealGLApi : public GLApiBase {
  public:
   RealGLApi();
   ~RealGLApi() override;
-  void Initialize(DriverGL* driver);
+  void Initialize(DriverGL* driver, base::CommandLine* command_line = nullptr);

[Zhenyao Mo, 2015/04/30 22:40:51]

default values are against coding style. Otherwise the CL looks good.

[David Yen, 2015/05/01 21:20:37]

Done.

 
  private:
+  void glGetIntegervFn(GLenum pname, GLint* params) override;
+  const GLubyte* glGetStringFn(GLenum name) override;
+  const GLubyte* glGetStringiFn(GLenum name, GLuint index) override;
+
   void glFinishFn() override;
   void glFlushFn() override;
+
+  // Filtered GL_EXTENSIONS we return to glGetString(i) calls.
+  bool extensions_filtered_ = false;
+  std::vector<std::string> disabled_extensions_;
+  std::vector<std::string> filtered_exts_;
+  std::string filtered_exts_str_;
 };
 
 // Inserts a TRACE for every GL call.
@@ -119,7 +134,7 @@ private:
 
 class GL_EXPORT ScopedSetGLToRealGLApi {
  public:
-  ScopedSetGLToRealGLApi();
+  ScopedSetGLToRealGLApi(GLApi* set_api = nullptr);

[no sievers, 2015/04/30 23:49:05]

Instead of changing this (which is supposed to set the api to the internal real
API, and not to a given API), can you just use SetGLApi() in your test?

[David Yen, 2015/05/01 21:20:37]

No longer relevant, so removed.

   ~ScopedSetGLToRealGLApi();
 
  private: