Make it possible to use OSMesa on Android

ui/gl/gl_implementation_android.cc

Index: ui/gl/gl_implementation_android.cc
diff --git a/ui/gl/gl_implementation_android.cc b/ui/gl/gl_implementation_android.cc
index f644866b3d8e0aa257619b837ba50f77077913d2..1156ec0a1856126fdc84686025e88e8227cf24a2 100644
--- a/ui/gl/gl_implementation_android.cc
+++ b/ui/gl/gl_implementation_android.cc
@@ -12,6 +12,7 @@
 #include "ui/gl/gl_egl_api_implementation.h"
 #include "ui/gl/gl_gl_api_implementation.h"
 #include "ui/gl/gl_implementation.h"
+#include "ui/gl/gl_implementation_linux.h"
 #include "ui/gl/gl_osmesa_api_implementation.h"
 
 namespace gfx {
@@ -27,24 +28,11 @@ void GL_BINDING_CALL MarshalDepthRangeToDepthRangef(GLclampd z_near,
   glDepthRangef(static_cast<GLclampf>(z_near), static_cast<GLclampf>(z_far));
 }
 
-base::NativeLibrary LoadLibrary(const base::FilePath& filename) {
-  std::string error;
-  base::NativeLibrary library = base::LoadNativeLibrary(filename, &error);
-  if (!library) {
-    DVLOG(1) << "Failed to load " << filename.MaybeAsASCII() << ": " << error;
-    return NULL;
-  }
-  return library;
-}
-
-base::NativeLibrary LoadLibrary(const char* filename) {
-  return LoadLibrary(base::FilePath(filename));
-}
-
 }  // namespace
 
 void GetAllowedGLImplementations(std::vector<GLImplementation>* impls) {
   impls->push_back(kGLImplementationEGLGLES2);
+  impls->push_back(kGLImplementationOSMesaGL);
 }
 
 bool InitializeGLBindings(GLImplementation implementation) {
@@ -90,6 +78,8 @@ bool InitializeGLBindings(GLImplementation implementation) {
       ::gfx::g_driver_gl.fn.glDepthRangeFn = MarshalDepthRangeToDepthRangef;
       break;
     }
+    case kGLImplementationOSMesaGL:
+      return InitializeGLBindingsOSMesaGL();
     case kGLImplementationMockGL: {
       SetGLGetProcAddressProc(GetMockGLProcAddress);
       SetGLImplementation(kGLImplementationMockGL);
@@ -111,6 +101,10 @@ bool InitializeGLExtensionBindings(GLImplementation implementation,
       InitializeGLExtensionBindingsGL(context);
       InitializeGLExtensionBindingsEGL(context);
       break;
+    case kGLImplementationOSMesaGL:
+      InitializeGLExtensionBindingsGL(context);
+      InitializeGLExtensionBindingsOSMESA(context);
+      break;
     case kGLImplementationMockGL:
       InitializeGLExtensionBindingsGL(context);
       break;