Move last of platform dependent init from //ui/gl to //ui/gl/init.

ui/gl/gl_implementation.h

Index: ui/gl/gl_implementation.h
diff --git a/ui/gl/gl_implementation.h b/ui/gl/gl_implementation.h
index cf03b6196e469aa211ec2e42f9dd6e299f9e5cae..6abd5da2dcab910250708c2c77eb6cabec73c2d4 100644
--- a/ui/gl/gl_implementation.h
+++ b/ui/gl/gl_implementation.h
@@ -37,9 +37,6 @@ struct GL_EXPORT GLWindowSystemBindingInfo {
   bool direct_rendering;
 };
 
-GL_EXPORT void GetAllowedGLImplementations(
-    std::vector<GLImplementation>* impls);
-
 #if defined(OS_WIN)
 typedef void* (WINAPI *GLGetProcAddressProc)(const char* name);
 #else
@@ -106,10 +103,6 @@ GL_EXPORT void SetGLGetProcAddressProc(GLGetProcAddressProc proc);
 // unsupported.
 GL_EXPORT void* GetGLProcAddress(const char* name);
 
-// Return information about the GL window system binding implementation (e.g.,
-// EGL, GLX, WGL). Returns true if the information was retrieved successfully.
-GL_EXPORT bool GetGLWindowSystemBindingInfo(GLWindowSystemBindingInfo* info);
-
 // Helper for fetching the OpenGL extensions from the current context.
 // This helper abstracts over differences between the desktop OpenGL
 // core profile, and OpenGL ES and the compatibility profile.  It's